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Showing 121 - 140 of 427 results

FHWA's Buy America Q and A for Federal-Aid Program

United States. Department of Transportation. Federal Highway Administration

2026-01-05 | Memoranda & Guidance: Guidance | PDF

The FHWA's Buy America policies require a domestic manufacturing process for iron or steel products and manufactured products that are permanently incorporated in a Federal-aid highway construction project. Title 23 Section 313 provides that the Administrator may issue a waiver if, (1) the application of Buy America provisions would be inconsistent ...

08/17/2026

Title : FHWA's Buy America Q and A for Federal-Aid Program Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2026-01-05 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93027
United States. Department of Transportation. Federal Highway Administration (2026). FHWA's Buy America Q and A for Federal-Aid Program.

United States. Department of Transportation. Federal Highway Administration "FHWA's Buy America Q and A for Federal-Aid Program" (2026)

United States. Department of Transportation. Federal Highway Administration "FHWA's Buy America Q and A for Federal-Aid Program" , 2026
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The FHWA's Buy America policies require a domestic manufacturing process for iron or steel products and manufactured products that are permanently incorporated in a Federal-aid highway construction project. Title 23 Section 313 provides that the Administrator may issue a waiver if, (1) the application of Buy America provisions would be inconsistent with the public interest or (2) iron or steel products or manufactured products are not produced in the United States in sufficient and reasonably available quantities which are of satisfactory quality. The statute and FHWA's regulations in 23 CFR 635.410 also waive FHWA's Buy America requirements for iron and steel at the time of contract award if a State elects to include an alternate bidding provision in the project advertisement for foreign and domestic steel and iron products, and the lowest overall bid based on using domestic products is more than 25 percent higher than the lowest overall bid based on using foreign products. Additionally, the FHWA's regulations permit a minimal use of foreign steel and iron in the amount of $2,500 or one-tenth of one percent, whichever is greater, to be used in a Federal-aid project. AN - dot:93027 KW - Government funding KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-01-05 T2 - Memoranda & Guidance: Guidance TI - FHWA's Buy America Q and A for Federal-Aid Program M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93027 ER - DB - ROSA P
Questions and Answers (Q&As) on the Federal Highway Administration (FHWA) Manufactured Products Final Rule

United States. Department of Transportation. Federal Highway Administration

2026-01-05 | Memoranda & Guidance: Guidance | PDF

On January 14, 2025, the Federal Highway Administration (FHWA) issued a final rule terminating its general waiver on manufactured products and establishing new Buy America requirements for manufactured products used in Federal-aid highway projects ("the Manufactured Products Final Rule"). The effective date of the Manufactured Products Final Rule i ...

08/17/2026

Title : Questions and Answers (Q&As) on the Federal Highway Administration (FHWA) Manufactured Products Final Rule Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2026-01-05 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93026
United States. Department of Transportation. Federal Highway Administration (2026). Questions and Answers (Q&As) on the Federal Highway Administration (FHWA) Manufactured Products Final Rule.

United States. Department of Transportation. Federal Highway Administration "Questions and Answers (Q&As) on the Federal Highway Administration (FHWA) Manufactured Products Final Rule" (2026)

United States. Department of Transportation. Federal Highway Administration "Questions and Answers (Q&As) on the Federal Highway Administration (FHWA) Manufactured Products Final Rule" , 2026
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - On January 14, 2025, the Federal Highway Administration (FHWA) issued a final rule terminating its general waiver on manufactured products and establishing new Buy America requirements for manufactured products used in Federal-aid highway projects ("the Manufactured Products Final Rule"). The effective date of the Manufactured Products Final Rule is March 20, 2025 (90 FR 2932; 90 FR 11139). For projects obligated before March 20, 2025, FHWA continues to apply its Buy America requirements as they existed before the final rule, including the application of the general waiver on manufactured products. More information on the requirements that apply to projects obligated before March 20, 2025 can be found here: https://www.fhwa.dot.gov/construction/contracts/buyam_qa.cfm. FHWA has modified its Buy America-Related Q&As page to reflect the effect of the Manufactured Products Final Rule on projects obligated on or after March 20, 2025. Additional Q&As on the Manufactured Products Final Rule are below. AN - dot:93026 KW - Procurement KW - Federal aid KW - Manufacturing KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2026-01-05 T2 - Memoranda & Guidance: Guidance TI - Questions and Answers (Q&As) on the Federal Highway Administration (FHWA) Manufactured Products Final Rule M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93026 ER - DB - ROSA P
Application of Digital Twins for Testing Connectivity, Automation, and Cooperation Applications

Hadi, Mohammed

;

Jeenprasom, Chonlachart

2026-07-01 | PDF

This study investigated the use of co-simulation for evaluating cooperative driving automation (CDA) applications within a work zone environment. The examined use case focused on the merging maneuvers of a single CDA-equipped vehicle into either a CDA platoon or a traffic stream consisting of human-driven vehicles near a work zone with a one-lane b ...

08/17/2026

Title : Application of Digital Twins for Testing Connectivity, Automation, and Cooperation Applications Creator(s) : Hadi, Mohammed;Jeenprasom, Chonlachart; Corporate Creator(s) : Florida International University Corporate Contributor(s) : Florida. Department of Transportation Contributor(s) : Wood, Brett Published Date : 2026-07-01 URL : https://rosap.ntl.bts.gov/view/dot/93025
Hadi, Mohammed and Jeenprasom, Chonlachart (2026). Application of Digital Twins for Testing Connectivity, Automation, and Cooperation Applications.

Hadi, Mohammed and Jeenprasom, Chonlachart "Application of Digital Twins for Testing Connectivity, Automation, and Cooperation Applications" (2026)

Hadi, Mohammed and Jeenprasom, Chonlachart "Application of Digital Twins for Testing Connectivity, Automation, and Cooperation Applications" , 2026
Export RIS Citation Information. TY - Tech Report AU - Hadi, Mohammed AU - Jeenprasom, Chonlachart A2 - Florida International University A3 - Florida. Department of Transportation A4 - Wood, Brett AB - This study investigated the use of co-simulation for evaluating cooperative driving automation (CDA) applications within a work zone environment. The examined use case focused on the merging maneuvers of a single CDA-equipped vehicle into either a CDA platoon or a traffic stream consisting of human-driven vehicles near a work zone with a one-lane blockage. The findings demonstrate that co-simulation can serve as an effective component of automated vehicle and CDA testing, particularly in complex and challenging environments such as work zones. The study further demonstrated that cooperative lane-changing behavior near work zones can be systematically assessed within a controlled simulation environment, and that the resulting performance measures can help identify limitations and guide improvements to existing automated and cooperative driving algorithms and control logic. AN - dot:93025 ET - Draft Final Report: April 2025 to July 2026 KW - Simulation KW - Digital twins KW - Driving automation levels KW - Automation KW - Testing KW - Automated vehicle control KW - Connectivity KW - Work zones KW - Case studies KW - Performance measurement KW - Lane changing KW - Co-simulation KW - Cooperative Driving Automation LA - English PB - Florida. Department of Transportation PY - 2026-07-01 TI - Application of Digital Twins for Testing Connectivity, Automation, and Cooperation Applications M3 - Tech Report N1 - United States N1 - BED29 TWO 977 -12 UR - https://rosap.ntl.bts.gov/view/dot/93025 ER - DB - ROSA P
Buy America Issues to Consider for Utility Work on Projects

United States. Department of Transportation. Federal Highway Administration

2012-12-19 | Memoranda & Guidance: Guidance | PDF

The following guidance addresses the applicability of the Buy America requirements to utility work accomplished as part of a larger Federal-aid highway program (FAHP) funded project, as defined by the National Environmental Protection Act (NEPA).

08/17/2026

Title : Buy America Issues to Consider for Utility Work on Projects Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2012-12-19 Series : Memoranda & Guidance: Guidance URL : https://rosap.ntl.bts.gov/view/dot/93024
United States. Department of Transportation. Federal Highway Administration (2012). Buy America Issues to Consider for Utility Work on Projects.

United States. Department of Transportation. Federal Highway Administration "Buy America Issues to Consider for Utility Work on Projects" (2012)

United States. Department of Transportation. Federal Highway Administration "Buy America Issues to Consider for Utility Work on Projects" , 2012
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - The following guidance addresses the applicability of the Buy America requirements to utility work accomplished as part of a larger Federal-aid highway program (FAHP) funded project, as defined by the National Environmental Protection Act (NEPA). AN - dot:93024 KW - Environmental policy KW - Contract administration KW - Government funding KW - Federal aid KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 2012-12-19 T2 - Memoranda & Guidance: Guidance TI - Buy America Issues to Consider for Utility Work on Projects M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93024 ER - DB - ROSA P
Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 45, Data Complete Through 8/7/2026

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information

2026-08-12 | Special Issue - Weekly Motor Fuel Report | PDF

The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration ...

08/17/2026

Title : Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 45, Data Complete Through 8/7/2026 Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information Published Date : 2026-08-12 Series : Special Issue - Weekly Motor Fuel Report URL : https://rosap.ntl.bts.gov/view/dot/93023
United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information (2026). Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 45, Data Complete Through 8/7/2026.

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 45, Data Complete Through 8/7/2026" (2026)

United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information "Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 45, Data Complete Through 8/7/2026" , 2026
Export RIS Citation Information. TY - Statistical Report A2 - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information AB - The Gasoline Product Supplied report offers insight on weekly fluctuation of the gasoline product supply, which is an important part of any analysis of construction trends, materials and operating costs associated with highway repair and construction, and changes in traffic volume. These data come directly from the Energy Information Administration (EIA) website. The EIA publishes the average daily amount of gasoline supplied in barrels, which HPPI converts to an average number of gallons of gasoline per week. AN - dot:93023 KW - Fuel consumption KW - Gasoline KW - Supply KW - Traffic volume KW - Data collection KW - Data analysis LA - English PB - United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information PY - 2026-08-12 T2 - Special Issue - Weekly Motor Fuel Report TI - Special Issue - Weekly Motor Fuel Report: Gasoline Product Supplied for Fiscal Year Week No. 45, Data Complete Through 8/7/2026 M3 - Statistical Report N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93023 ER - DB - ROSA P
North Dakota Statewide Traffic Safety Survey, 2018 [Brief]

Upper Great Plains Transportation Institute ...

2018-01-01 | PDF

The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, qu ...

08/17/2026

Title : North Dakota Statewide Traffic Safety Survey, 2018 [Brief] Corporate Creator(s) : Upper Great Plains Transportation Institute;North Dakota State University; Corporate Contributor(s) : North Dakota. Department of Transportation Published Date : 2018-01-01 URL : https://rosap.ntl.bts.gov/view/dot/93022
Upper Great Plains Transportation Institute (2018). North Dakota Statewide Traffic Safety Survey, 2018 [Brief].

Upper Great Plains Transportation Institute "North Dakota Statewide Traffic Safety Survey, 2018 [Brief]" (2018)

Upper Great Plains Transportation Institute "North Dakota Statewide Traffic Safety Survey, 2018 [Brief]" , 2018
Export RIS Citation Information. TY - Brief A2 - Upper Great Plains Transportation Institute A2 - North Dakota State University A3 - North Dakota. Department of Transportation AB - The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, questions were included to better understand views on specific programs and attitudes pertinent to North Dakota drivers. Results show that more North Dakota drivers have adopted safe driving practices, but additional efforts are needed to improve safety on the state's roads. AN - dot:93022 ET - Issue Brief KW - Traffic safety KW - Surveys KW - Drunk driving KW - Seat belt use KW - Speeding KW - Performance measurement KW - State government agencies KW - Fatalities KW - Driving behavior KW - Crashes KW - Data collection LA - English PB - Upper Great Plains Transportation Institute PY - 2018-01-01 TI - North Dakota Statewide Traffic Safety Survey, 2018 [Brief] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93022 ER - DB - ROSA P
North Dakota Statewide Traffic Safety Survey, 2018: Traffic Safety Performance Measures for State and Federal Agencies

Vachal, Kimberly ;

Benson, Laurel

2018-08-01 | PDF

The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, qu ...

08/17/2026

Title : North Dakota Statewide Traffic Safety Survey, 2018: Traffic Safety Performance Measures for State and Federal Agencies Creator(s) : Vachal, Kimberly;Benson, Laurel;Kubas, Andrew; Corporate Creator(s) : Upper Great Plains Transportation Institute;North Dakota State University; Corporate Contributor(s) : North Dakota. Department of Transportation Published Date : 2018-08-01 Report Number : 299 URL : https://rosap.ntl.bts.gov/view/dot/93021
Vachal, Kimberly et al. (2018). North Dakota Statewide Traffic Safety Survey, 2018: Traffic Safety Performance Measures for State and Federal Agencies.

Vachal, Kimberly and Benson, Laurel and Kubas, Andrew "North Dakota Statewide Traffic Safety Survey, 2018: Traffic Safety Performance Measures for State and Federal Agencies" (2018)

Vachal, Kimberly et al. "North Dakota Statewide Traffic Safety Survey, 2018: Traffic Safety Performance Measures for State and Federal Agencies" , 2018
Export RIS Citation Information. TY - Tech Report AU - Vachal, Kimberly AU - Benson, Laurel AU - Kubas, Andrew A2 - Upper Great Plains Transportation Institute A2 - North Dakota State University A3 - North Dakota. Department of Transportation AB - The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, questions were included to better understand views on specific programs and attitudes pertinent to North Dakota drivers. Results show that more North Dakota drivers have adopted safe driving practices, but additional efforts are needed to improve safety on the state's roads. AN - dot:93021 KW - Traffic safety KW - Surveys KW - Drunk driving KW - Seat belt use KW - Speeding KW - Performance measurement KW - State government agencies KW - Fatalities KW - Driving behavior KW - Crashes KW - Data collection LA - English PB - Upper Great Plains Transportation Institute PY - 2018-08-01 SN - 299 TI - North Dakota Statewide Traffic Safety Survey, 2018: Traffic Safety Performance Measures for State and Federal Agencies M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93021 ER - DB - ROSA P
North Dakota Statewide Traffic Safety Survey, 2017 [Brief]

Upper Great Plains Transportation Institute ...

2017-01-01 | PDF

The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, qu ...

08/17/2026

Title : North Dakota Statewide Traffic Safety Survey, 2017 [Brief] Corporate Creator(s) : Upper Great Plains Transportation Institute;North Dakota State University; Corporate Contributor(s) : North Dakota. Department of Transportation Published Date : 2017-01-01 URL : https://rosap.ntl.bts.gov/view/dot/93020
Upper Great Plains Transportation Institute (2017). North Dakota Statewide Traffic Safety Survey, 2017 [Brief].

Upper Great Plains Transportation Institute "North Dakota Statewide Traffic Safety Survey, 2017 [Brief]" (2017)

Upper Great Plains Transportation Institute "North Dakota Statewide Traffic Safety Survey, 2017 [Brief]" , 2017
Export RIS Citation Information. TY - Brief A2 - Upper Great Plains Transportation Institute A2 - North Dakota State University A3 - North Dakota. Department of Transportation AB - The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, questions were included to better understand views on specific programs and attitudes pertinent to North Dakota drivers. Results show that more North Dakota drivers have adopted safe driving practices, but additional efforts are needed to improve safety on the state's roads. AN - dot:93020 ET - Issue Brief KW - Traffic safety KW - Surveys KW - Drunk driving KW - Seat belt use KW - Speeding KW - Performance measurement KW - State government agencies KW - Fatalities KW - Driving behavior KW - Crashes KW - Data collection LA - English PB - Upper Great Plains Transportation Institute PY - 2017-01-01 TI - North Dakota Statewide Traffic Safety Survey, 2017 [Brief] M3 - Brief N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93020 ER - DB - ROSA P
North Dakota Statewide Traffic Safety Survey, 2017: Traffic Safety Performance Measures for State and Federal Agencies

Vachal, Kimberly ;

Benson, Laurel

2017-08-01 | PDF

The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, qu ...

08/17/2026

Title : North Dakota Statewide Traffic Safety Survey, 2017: Traffic Safety Performance Measures for State and Federal Agencies Creator(s) : Vachal, Kimberly;Benson, Laurel;Kubas, Andrew; Corporate Creator(s) : Upper Great Plains Transportation Institute;North Dakota State University; Corporate Contributor(s) : North Dakota. Department of Transportation Published Date : 2017-08-01 Report Number : 295 URL : https://rosap.ntl.bts.gov/view/dot/93019
Vachal, Kimberly et al. (2017). North Dakota Statewide Traffic Safety Survey, 2017: Traffic Safety Performance Measures for State and Federal Agencies.

Vachal, Kimberly and Benson, Laurel and Kubas, Andrew "North Dakota Statewide Traffic Safety Survey, 2017: Traffic Safety Performance Measures for State and Federal Agencies" (2017)

Vachal, Kimberly et al. "North Dakota Statewide Traffic Safety Survey, 2017: Traffic Safety Performance Measures for State and Federal Agencies" , 2017
Export RIS Citation Information. TY - Tech Report AU - Vachal, Kimberly AU - Benson, Laurel AU - Kubas, Andrew A2 - Upper Great Plains Transportation Institute A2 - North Dakota State University A3 - North Dakota. Department of Transportation AB - The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, questions were included to better understand views on specific programs and attitudes pertinent to North Dakota drivers. Results show that more North Dakota drivers have adopted safe driving practices, but additional efforts are needed to improve safety on the state's roads. AN - dot:93019 KW - Traffic safety KW - Surveys KW - Drunk driving KW - Seat belt use KW - Speeding KW - Performance measurement KW - State government agencies KW - Fatalities KW - Driving behavior KW - Crashes KW - Data collection LA - English PB - Upper Great Plains Transportation Institute PY - 2017-08-01 SN - 295 TI - North Dakota Statewide Traffic Safety Survey, 2017: Traffic Safety Performance Measures for State and Federal Agencies M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93019 ER - DB - ROSA P
Silane Bridge Deck Rating

Ghazal, Ahmed I. ;

Myers, John J.

2026-07-01 | PDF

Bridge decks are among the most vulnerable components of bridge structures due to the combined effects of multiple deterioration mechanisms, including traffic-induced abrasion, repeated freeze-thaw cycling, and chloride ingress. Surface impregnation using silane sealers has proven to be an effective method for mitigating concrete deterioration in b ...

08/17/2026

Title : Silane Bridge Deck Rating Creator(s) : Ghazal, Ahmed I.;Myers, John J.;ElGawady, Mohamed A.; Corporate Creator(s) : Missouri University of Science and Technology Corporate Contributor(s) : Missouri. Department of Transportation. Construction and Materials Division Published Date : 2026-07-01 Report Number : cmr 26-010 URL : https://rosap.ntl.bts.gov/view/dot/93018
Ghazal, Ahmed I. et al. (2026). Silane Bridge Deck Rating.

Ghazal, Ahmed I. and Myers, John J. and ElGawady, Mohamed A. "Silane Bridge Deck Rating" (2026)

Ghazal, Ahmed I. et al. "Silane Bridge Deck Rating" , 2026
Export RIS Citation Information. TY - Tech Report AU - Ghazal, Ahmed I. AU - Myers, John J. AU - ElGawady, Mohamed A. A2 - Missouri University of Science and Technology A3 - Missouri. Department of Transportation. Construction and Materials Division AB - Bridge decks are among the most vulnerable components of bridge structures due to the combined effects of multiple deterioration mechanisms, including traffic-induced abrasion, repeated freeze-thaw cycling, and chloride ingress. Surface impregnation using silane sealers has proven to be an effective method for mitigating concrete deterioration in bridge decks. In this study, the performance of various silane sealers and silane-nanoclay composite systems was extensively evaluated to assess their ability to protect bridge decks against deterioration mechanisms such as freeze-thaw cycling, capillary absorption, chloride ingress, and surface scaling. In addition, the service life of silane and silane-nanoclay composite systems was estimated. A field evaluation was conducted on bridge decks that had been in service for approximately 8 years. The evaluation included measurements of depth of penetration, static contact angle, chloride ingress, and rate of absorption. The results demonstrate that silane treatments represent a viable option for protecting bridge decks against deterioration. However, silane-nanoclay composites exhibited increased chloride ingress under aggressive exposure conditions and greater surface scaling under exposure to deicing chemicals. The field investigation demonstrated a wide range of performance among the bridge decks evaluated. Nevertheless, following early-age applications, silane treatments can be successfully reapplied at intervals of approximately 5 years to maintain long-term protective performance. AN - dot:93018 ET - Final Report KW - Composite materials KW - Electrical resistivity KW - Freeze thaw tests KW - Chloride content KW - Frost KW - Silane KW - Cracking KW - Performance KW - Bridge decks KW - Ratings KW - Silane-nanoclay composites KW - Cracked and uncracked concrete KW - Chloride penetration KW - Freeze-thaw cycling KW - frost scaling KW - capillary suction LA - English PB - Missouri. Department of Transportation. Construction and Materials Division PY - 2026-07-01 SN - cmr 26-010 TI - Silane Bridge Deck Rating M3 - Tech Report N1 - United States N1 - TR202413 UR - https://rosap.ntl.bts.gov/view/dot/93018 ER - DB - ROSA P
TSMO Strategies and Automation in Work Zones

Jackels, Jon

;

Falero, Cortney

2026-07-01 | PDF

This research evaluated the Missouri Department of Transportation's (MoDOT's) use of Transportation Systems Management and Operations (TSMO) strategies in work zones, with an emphasis on Smart Work Zone (SWZ) technologies and automation. Project objectives included identifying available TSMO strategies, documenting examples of their use, implementi ...

08/17/2026

Title : TSMO Strategies and Automation in Work Zones Creator(s) : Jackels, Jon;Falero, Cortney;Salum, Jimoku;Sebens, Justin;Hayes, Maranatha;Leight, Shawn;Kaltenbronn, Jacob; Corporate Creator(s) : SRF Consulting Group;CBB Transportation; Corporate Contributor(s) : Missouri. Department of Transportation. Construction and Materials Division Published Date : 2026-07-01 Report Number : cmr 26-009 URL : https://rosap.ntl.bts.gov/view/dot/93017
Jackels, Jon et al. (2026). TSMO Strategies and Automation in Work Zones.

Jackels, Jon et al. "TSMO Strategies and Automation in Work Zones" (2026)

Jackels, Jon et al. "TSMO Strategies and Automation in Work Zones" , 2026
Export RIS Citation Information. TY - Tech Report AU - Jackels, Jon AU - Falero, Cortney AU - Salum, Jimoku AU - Sebens, Justin AU - Hayes, Maranatha AU - Leight, Shawn AU - Kaltenbronn, Jacob A2 - SRF Consulting Group A2 - CBB Transportation A3 - Missouri. Department of Transportation. Construction and Materials Division AB - This research evaluated the Missouri Department of Transportation's (MoDOT's) use of Transportation Systems Management and Operations (TSMO) strategies in work zones, with an emphasis on Smart Work Zone (SWZ) technologies and automation. Project objectives included identifying available TSMO strategies, documenting examples of their use, implementing selected strategies in an active Missouri work zone, evaluating their effectiveness, and developing recommendations for future projects. The work included a review of current practices and literature to assess MoDOT's work zone management, TSMO, and SWZ processes. Based on this review, selected strategies were recommended and implemented on a MoDOT construction project. Safety and operational evaluations were conducted using daily monitoring, performance data collection, and post-project analysis. An economic evaluation assessed the costs of the deployed strategies. The project concluded with recommendations for SWZ Job Special Provisions and a refined list of TSMO strategies, documenting effective best practices, and guidance for integrating advanced work zone strategies into MoDOT's standard practices. AN - dot:93017 ET - Final Report KW - Transportation system management KW - Transportation operations KW - Work zones KW - Data analysis KW - Automation KW - Strategic planning KW - Work zone safety KW - Intelligent transportation systems KW - Evaluation and assessment KW - Best practices KW - Smart Work Zones (SWZ) KW - Work Zone Mobility KW - Work zone intelligent transportation systems KW - Queue Warning system KW - Work Zone Data Evaluation LA - English PB - Missouri. Department of Transportation. Construction and Materials Division PY - 2026-07-01 SN - cmr 26-009 TI - TSMO Strategies and Automation in Work Zones M3 - Tech Report N1 - United States N1 - TR202415 UR - https://rosap.ntl.bts.gov/view/dot/93017 ER - DB - ROSA P
New Technologies for Detecting and Mapping Passages Beneath Missouri Highways

Ducey, Luke ;

Capes, Andrew

2026-05-01 | PDF

The Missouri Department of Transportation (MoDOT) commissioned WSP USA Inc., in collaboration with the Missouri University of Science and Technology (Missouri S&T), to evaluate advanced, nonintrusive geophysical and remote sensing technologies for detecting and mapping subsurface passages beneath Missouri highways. Subsurface features such as karst ...

08/17/2026

Title : New Technologies for Detecting and Mapping Passages Beneath Missouri Highways Creator(s) : Ducey, Luke;Capes, Andrew;Grote, Katherine;Maurer, Jeremy; Corporate Creator(s) : Missouri University of Science and Technology;WSP USA Inc.; Corporate Contributor(s) : Missouri. Department of Transportation. Construction and Materials Division;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-05-01 Report Number : CMR 26-008 URL : https://rosap.ntl.bts.gov/view/dot/93016
Ducey, Luke et al. (2026). New Technologies for Detecting and Mapping Passages Beneath Missouri Highways.

Ducey, Luke et al. "New Technologies for Detecting and Mapping Passages Beneath Missouri Highways" (2026)

Ducey, Luke et al. "New Technologies for Detecting and Mapping Passages Beneath Missouri Highways" , 2026
Export RIS Citation Information. TY - Tech Report AU - Ducey, Luke AU - Capes, Andrew AU - Grote, Katherine AU - Maurer, Jeremy A2 - Missouri University of Science and Technology A2 - WSP USA Inc. A3 - Missouri. Department of Transportation. Construction and Materials Division A3 - United States. Department of Transportation. Federal Highway Administration AB - The Missouri Department of Transportation (MoDOT) commissioned WSP USA Inc., in collaboration with the Missouri University of Science and Technology (Missouri S&T), to evaluate advanced, nonintrusive geophysical and remote sensing technologies for detecting and mapping subsurface passages beneath Missouri highways. Subsurface features such as karst voids, caves, sinkholes, and abandoned mine workings present ongoing risks to roadway safety, structural performance, and long-term maintenance, particularly in regions underlain by karst terrain and historic mining activity. This study was conducted to provide MoDOT with a practical, implementation-focused assessment of available subsurface investigation methods and to develop a risk-based framework for their application beneath active transportation corridors. Following a comprehensive literature review, technical evaluation, and review of practices employed by other state departments of transportation, a suite of geophysical and remote sensing methods was assessed. Evaluated technologies included Electrical Resistivity Tomography (ERT), Ground Penetrating Radar (GPR), seismic refraction, and Multichannel Analysis of Surface Waves (MASW), microgravity, magnetometry, transient electromagnetic (TEM)surveying, Light Detection and Ranging (LiDAR), Interferometric Synthetic Aperture Radar (InSAR), muography, and selected borehole geophysical methods. Each method was evaluated based on depth of investigation, sensitivity to voids and weak zones, logistical constraints, suitability beneath paved roadways, and applicability to Missouri's geologic conditions. Results indicate that no single method is universally effective; however, ERT consistently provides the most reliable primary subsurface imaging for void detection in karst and mining-prone settings. Based on these findings, a phased, multi-method investigation framework is recommended to support proactive risk management, targeted verification, and informed decision-making for MoDOT's transportation infrastructure. AN - dot:93016 ET - Final Report (August 2025 - May 2026) KW - Subsurface drainage KW - Karst KW - Mines KW - Highway planning KW - Infrastructure KW - Geophysics KW - Electrical resistivity KW - Tomography KW - Ground penetrating radar KW - Seismicity KW - Risk KW - Transportation corridors KW - Subsurface void detection KW - Karst terrain KW - Abandoned mine workings KW - Highway infrastructure KW - Geophysical methods KW - Seismic methods KW - Non-intrusive investigations KW - Risk-based investigation framework LA - English PB - Missouri. Department of Transportation. Construction and Materials Division PY - 2026-05-01 SN - CMR 26-008 TI - New Technologies for Detecting and Mapping Passages Beneath Missouri Highways M3 - Tech Report N1 - United States N1 - TR202603 UR - https://rosap.ntl.bts.gov/view/dot/93016 ER - DB - ROSA P
Use of Scupper-Modified Jersey Barriers by Small Wildlife Along a New Segment of I-49 in Southwestern Missouri

Ortega, Brock ;

Woodie, Clara

2026-04-01 | PDF

This study evaluated the effectiveness of scupper-modified Jersey barriers in facilitating small wildlife movement across a newly constructed segment of Interstate 49 in southwestern Missouri. Traditional concrete median barriers can reduce wildlife-vehicle collisions through fewer crossing attempts but create impermeable barriers for small-bodied ...

08/17/2026

Title : Use of Scupper-Modified Jersey Barriers by Small Wildlife Along a New Segment of I-49 in Southwestern Missouri Creator(s) : Ortega, Brock;Woodie, Clara;Shilling, Fraser;Brehme, Cheryl; Corporate Creator(s) : Dudek & Associates Corporate Contributor(s) : Missouri. Department of Transportation. Construction and Materials Division;United States. Department of Transportation. Federal Highway Administration; Published Date : 2026-04-01 Report Number : cmr-26-007 URL : https://rosap.ntl.bts.gov/view/dot/93015
Ortega, Brock et al. (2026). Use of Scupper-Modified Jersey Barriers by Small Wildlife Along a New Segment of I-49 in Southwestern Missouri.

Ortega, Brock et al. "Use of Scupper-Modified Jersey Barriers by Small Wildlife Along a New Segment of I-49 in Southwestern Missouri" (2026)

Ortega, Brock et al. "Use of Scupper-Modified Jersey Barriers by Small Wildlife Along a New Segment of I-49 in Southwestern Missouri" , 2026
Export RIS Citation Information. TY - Tech Report AU - Ortega, Brock AU - Woodie, Clara AU - Shilling, Fraser AU - Brehme, Cheryl A2 - Dudek & Associates A3 - Missouri. Department of Transportation. Construction and Materials Division A3 - United States. Department of Transportation. Federal Highway Administration AB - This study evaluated the effectiveness of scupper-modified Jersey barriers in facilitating small wildlife movement across a newly constructed segment of Interstate 49 in southwestern Missouri. Traditional concrete median barriers can reduce wildlife-vehicle collisions through fewer crossing attempts but create impermeable barriers for small-bodied species, fragmenting habitats and limiting connectivity. To address this, the Missouri Department of Transportation installed wildlife median barriers featuring scupper openings designed to allow passage for amphibians, reptiles, and small mammals. The research employed a multi-method approach, including road mortality surveys, camera monitoring within scuppers, roadside and culvert camera studies, coverboard surveys, and environmental DNA (eDNA) sampling. Results indicate that scuppers are used by a variety of species; rodents were the most frequent users documented by cameras, while eDNA revealed a broader biodiversity signal, detecting amphibians, reptiles, and small mammals not observed visually. Amphibian and reptile roadkill patterns were strongly influenced by precipitation and temperature, with amphibian mortality peaking during rainfall events and reptile mortality concentrated in warmer months. Comparative analysis showed eDNA consistently detected more species than cameras, underscoring its value for identifying cryptic or nocturnal taxa. However, detection of eDNA at a roadway feature indicates the presence of genetic material but does not confirm live animal presence, residency, or use of the feature. Therefore, eDNA results should be interpreted as probabilistic indicators of recent regional presence and evaluated alongside complementary survey methods. Overall, scuppers in wildlife median barriers represent a cost-effective and promising mitigation strategy to provide small animal permeability between fragmented habitats bisected by roads, especially for small mammals. The use and effectiveness of scuppers for amphibians and reptiles requires further studies that validate their presence at scuppers. Combining structural innovations with controlled studies and integrated monitoring approaches inform future highway design standards and improve ecological connectivity. AN - dot:93015 ET - Final Report KW - Cameras KW - Road kill KW - Fatalities KW - Wildlife crossings KW - Ecology KW - Highway design KW - Mammals KW - Environment KW - Ecosystems KW - Median barriers KW - Surveys KW - Scupper KW - Jersey Barrier KW - environmental DNA KW - Camera study KW - road mortality study KW - coverboard study LA - English PB - Missouri. Department of Transportation. Construction and Materials Division PY - 2026-04-01 SN - cmr-26-007 TI - Use of Scupper-Modified Jersey Barriers by Small Wildlife Along a New Segment of I-49 in Southwestern Missouri M3 - Tech Report N1 - United States N1 - TR202312 UR - https://rosap.ntl.bts.gov/view/dot/93015 ER - DB - ROSA P
North Dakota Statewide Traffic Safety Survey, 2016: Traffic Safety Performance Measures for State and Federal Agencies

Vachal, Kimberly ;

Benson, Laurel

2016-07-01 | PDF

The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, qu ...

08/17/2026

Title : North Dakota Statewide Traffic Safety Survey, 2016: Traffic Safety Performance Measures for State and Federal Agencies Creator(s) : Vachal, Kimberly;Benson, Laurel;Kubas, Andrew; Corporate Creator(s) : Upper Great Plains Transportation Institute;North Dakota State University; Corporate Contributor(s) : North Dakota. Department of Transportation Published Date : 2016-07-01 Report Number : 288 URL : https://rosap.ntl.bts.gov/view/dot/93014
Vachal, Kimberly et al. (2016). North Dakota Statewide Traffic Safety Survey, 2016: Traffic Safety Performance Measures for State and Federal Agencies.

Vachal, Kimberly and Benson, Laurel and Kubas, Andrew "North Dakota Statewide Traffic Safety Survey, 2016: Traffic Safety Performance Measures for State and Federal Agencies" (2016)

Vachal, Kimberly et al. "North Dakota Statewide Traffic Safety Survey, 2016: Traffic Safety Performance Measures for State and Federal Agencies" , 2016
Export RIS Citation Information. TY - Tech Report AU - Vachal, Kimberly AU - Benson, Laurel AU - Kubas, Andrew A2 - Upper Great Plains Transportation Institute A2 - North Dakota State University A3 - North Dakota. Department of Transportation AB - The statewide driver traffic safety survey provides baseline metrics for the Safety Division and others to use in understanding perceptions and self-reported behaviors related to focus issues. A core set of questions addresses nationally agreed upon priorities, including seat belts, impaired driving, and speeding. In addition to the core issues, questions were included to better understand views on specific programs and attitudes pertinent to North Dakota drivers. Results show that more North Dakota drivers have adopted safe driving practices, but additional efforts are needed to improve safety on the state's roads. AN - dot:93014 KW - Traffic safety KW - Surveys KW - Drunk driving KW - Seat belt use KW - Speeding KW - Performance measurement KW - State government agencies KW - Fatalities KW - Driving behavior KW - Crashes KW - Data collection LA - English PB - Upper Great Plains Transportation Institute PY - 2016-07-01 SN - 288 TI - North Dakota Statewide Traffic Safety Survey, 2016: Traffic Safety Performance Measures for State and Federal Agencies M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93014 ER - DB - ROSA P
Electromagnetic Emissions From a Modular Low Voltage Electro-Impulse De-Icing (EIDI) System

Zieve, Peter ;

Huffer, Brent

1989-03-01 | PDF

An important consideration in the certification of Electro-impulse De-icing (EIDI) systems for aircraft ice protection is electromagnetic interference (EMI). When the capacitor bank in an EIDI system discharges a large pulse of current travels down a transmission line to the coil. Subsequent radiation by the transmission line and the coil produces ...

08/17/2026

Title : Electromagnetic Emissions From a Modular Low Voltage Electro-Impulse De-Icing (EIDI) System Creator(s) : Zieve, Peter;Huffer, Brent;Ng, James; Corporate Creator(s) : Electroimpact, Inc Corporate Contributor(s) : United States. Department of Transportation. Federal Aviation Administration. Technical Center Published Date : 1989-03-01 Report Number : DOT/FAA/CT-88/31 URL : https://rosap.ntl.bts.gov/view/dot/93013
Zieve, Peter et al. (1989). Electromagnetic Emissions From a Modular Low Voltage Electro-Impulse De-Icing (EIDI) System.

Zieve, Peter and Huffer, Brent and Ng, James "Electromagnetic Emissions From a Modular Low Voltage Electro-Impulse De-Icing (EIDI) System" (1989)

Zieve, Peter et al. "Electromagnetic Emissions From a Modular Low Voltage Electro-Impulse De-Icing (EIDI) System" , 1989
Export RIS Citation Information. TY - Tech Report AU - Zieve, Peter AU - Huffer, Brent AU - Ng, James A2 - Electroimpact, Inc A3 - United States. Department of Transportation. Federal Aviation Administration. Technical Center A4 - Masters, Charles O AB - An important consideration in the certification of Electro-impulse De-icing (EIDI) systems for aircraft ice protection is electromagnetic interference (EMI). When the capacitor bank in an EIDI system discharges a large pulse of current travels down a transmission line to the coil. Subsequent radiation by the transmission line and the coil produces EM!. The Low Voltage Electro-Impulse De-icing system (LVEIDI) is unique in that the capacitor bank is mounted adjacent to the coil thereby eliminating most of the cables. Electromagnetic emissions from this system would than be primarily from the coil. The performed tests investigate the EMI environment inside and outside of both a composite and an aluminum wing. Due to the absence of the shielding effect of aluminum the problem of electromagnetic emissions is particularly severe when the wing is constructed of composite materials. AN - dot:93013 ET - Final Report KW - Airplanes KW - Electromagnetic compatibility KW - Ice prevention LA - English PB - United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center PY - 1989-03-01 SN - DOT/FAA/CT-88/31 TI - Electromagnetic Emissions From a Modular Low Voltage Electro-Impulse De-Icing (EIDI) System M3 - Tech Report N1 - United States UR - https://rosap.ntl.bts.gov/view/dot/93013 ER - DB - ROSA P
Buy America Requirements 1989 [Memorandum]

United States. Federal Highway Administration. Construction and Maintenance Division ...

1989-07-06 | Memoranda & Guidance: Information | PDF

A recent meeting with a material supplier to discuss FHWA Buy America requirements has brought up several issues which we believe warrant further clarification to FHWA field offices and States. These issues include certification of steel, determining the cost of foreign steel, and impacts of international trade agreements.

08/17/2026

Title : Buy America Requirements 1989 [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Construction and Maintenance Division;United States. Federal Highway Administration. Office of Highway Operations; Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1989-07-06 Series : Memoranda & Guidance: Information URL : https://rosap.ntl.bts.gov/view/dot/93012
United States. Federal Highway Administration. Construction and Maintenance Division (1989). Buy America Requirements 1989 [Memorandum].

United States. Federal Highway Administration. Construction and Maintenance Division "Buy America Requirements 1989 [Memorandum]" (1989)

United States. Federal Highway Administration. Construction and Maintenance Division "Buy America Requirements 1989 [Memorandum]" , 1989
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Construction and Maintenance Division A2 - United States. Federal Highway Administration. Office of Highway Operations A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - A recent meeting with a material supplier to discuss FHWA Buy America requirements has brought up several issues which we believe warrant further clarification to FHWA field offices and States. These issues include certification of steel, determining the cost of foreign steel, and impacts of international trade agreements. AN - dot:93012 KW - Federal aid highways KW - Purchasing KW - Regulations KW - Steel KW - International trade KW - Policy KW - Recommendations LA - English PB - United States. Federal Highway Administration. Office of Highway Operations PY - 1989-07-06 T2 - Memoranda & Guidance: Information TI - Buy America Requirements 1989 [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93012 ER - DB - ROSA P
Buy America Requirements 1993 [Memorandum]

United States. Federal Highway Administration. Office of Engineering

1993-12-02 | Memoranda & Guidance: Information | PDF

We have recently been made aware, as a result of concerns raised by the steel and iron industry, that there may be some variation in interpretation of the Buy America requirements for sheet piling on the Central Artery/Tunnel (CA/T) projects in Massachusetts. As you know, we attended a meeting with the steel and iron industry representatives relati ...

08/17/2026

Title : Buy America Requirements 1993 [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Office of Engineering Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1993-12-02 Series : Memoranda & Guidance: Information URL : https://rosap.ntl.bts.gov/view/dot/93011
United States. Federal Highway Administration. Office of Engineering (1993). Buy America Requirements 1993 [Memorandum].

United States. Federal Highway Administration. Office of Engineering "Buy America Requirements 1993 [Memorandum]" (1993)

United States. Federal Highway Administration. Office of Engineering "Buy America Requirements 1993 [Memorandum]" , 1993
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Office of Engineering A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - We have recently been made aware, as a result of concerns raised by the steel and iron industry, that there may be some variation in interpretation of the Buy America requirements for sheet piling on the Central Artery/Tunnel (CA/T) projects in Massachusetts. As you know, we attended a meeting with the steel and iron industry representatives relative to specific CA/T projects on October 21. During this meeting, the policy of permanent incorporation of Buy America covered materials, as directed by the owner, was discussed. AN - dot:93011 KW - Federal aid highways KW - Purchasing KW - Regulations KW - Sheet piling KW - Policy KW - Recommendations LA - English PB - United States. Federal Highway Administration. Office of Engineering PY - 1993-12-02 T2 - Memoranda & Guidance: Information TI - Buy America Requirements 1993 [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93011 ER - DB - ROSA P
Buy America and NAFTA [Memorandum]

United States. Department of Transportation. Federal Highway Administration

1994-04-22 | Memoranda & Guidance: Information | PDF

This office has received several inquiries concerning the effect of the North American Free Trade Agreement (NAFTA) on the FHWA Buy America Requirements. The attached letter from Administrator Slater to Mr. T. Peter Ruane, President and Chief Executive Officer of the American Road and Transportation Builders Association, explains the situation rega ...

08/17/2026

Title : Buy America and NAFTA [Memorandum] Corporate Creator(s) : United States. Department of Transportation. Federal Highway Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1994-04-22 Series : Memoranda & Guidance: Information URL : https://rosap.ntl.bts.gov/view/dot/93010
United States. Department of Transportation. Federal Highway Administration (1994). Buy America and NAFTA [Memorandum].

United States. Department of Transportation. Federal Highway Administration "Buy America and NAFTA [Memorandum]" (1994)

United States. Department of Transportation. Federal Highway Administration "Buy America and NAFTA [Memorandum]" , 1994
Export RIS Citation Information. TY - Memorandum A2 - United States. Department of Transportation. Federal Highway Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - This office has received several inquiries concerning the effect of the North American Free Trade Agreement (NAFTA) on the FHWA Buy America Requirements. The attached letter from Administrator Slater to Mr. T. Peter Ruane, President and Chief Executive Officer of the American Road and Transportation Builders Association, explains the situation regarding NAFTA and Buy America. Article 1001 of NAFTA expressly exempts grants, loans, cooperative agreements, and other forms of Federal financial assistance from its coverage. Unless future negotiations create additional requirements, the NAFTA does not affect the Buy America requirements for Federal-aid highway construction projects. AN - dot:93010 KW - Procurement KW - Government funding KW - Trade KW - Construction projects KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1994-04-22 T2 - Memoranda & Guidance: Information TI - Buy America and NAFTA [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93010 ER - DB - ROSA P
Buy America Requirements Interpretation - Ground Anchors, Soil Nails, and Geotech Instruments [Memorandum]

United States. Federal Highway Administration. Construction and Maintenance Division

1994-12-07 | Memoranda & Guidance: Information | PDF

This memorandum responds to and clarifies a recent inquiry by the Region 10 geotechnical engineer, about the application of the Buy America requirements to ground anchors, soil nails, and geotech instruments. The application of Buy America requirements in "temporary" use situations and a definition of "temporary" was the basis of the inquiry.

08/17/2026

Title : Buy America Requirements Interpretation - Ground Anchors, Soil Nails, and Geotech Instruments [Memorandum] Corporate Creator(s) : United States. Federal Highway Administration. Construction and Maintenance Division Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 1994-12-07 Series : Memoranda & Guidance: Information URL : https://rosap.ntl.bts.gov/view/dot/93009
United States. Federal Highway Administration. Construction and Maintenance Division (1994). Buy America Requirements Interpretation - Ground Anchors, Soil Nails, and Geotech Instruments [Memorandum].

United States. Federal Highway Administration. Construction and Maintenance Division "Buy America Requirements Interpretation - Ground Anchors, Soil Nails, and Geotech Instruments [Memorandum]" (1994)

United States. Federal Highway Administration. Construction and Maintenance Division "Buy America Requirements Interpretation - Ground Anchors, Soil Nails, and Geotech Instruments [Memorandum]" , 1994
Export RIS Citation Information. TY - Memorandum A2 - United States. Federal Highway Administration. Construction and Maintenance Division A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - This memorandum responds to and clarifies a recent inquiry by the Region 10 geotechnical engineer, about the application of the Buy America requirements to ground anchors, soil nails, and geotech instruments. The application of Buy America requirements in "temporary" use situations and a definition of "temporary" was the basis of the inquiry. AN - dot:93009 KW - Procurement KW - Ground anchors KW - Soil nailing KW - Geotechnical engineering KW - Policy KW - Recommendations LA - English PB - United States. Department of Transportation. Federal Highway Administration PY - 1994-12-07 T2 - Memoranda & Guidance: Information TI - Buy America Requirements Interpretation - Ground Anchors, Soil Nails, and Geotech Instruments [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93009 ER - DB - ROSA P
Buy America - Non-Domestic Flux for Welding of Bridges and Other Structures [Memorandum]

Horne, Dwight

2003-01-03 | Memoranda & Guidance: Information | PDF

Thank you for your January 3 letter to the Federal Highway Administration that inquired about the applicability of the Buy America requirements to non-domestic flux used in welding. We have reviewed the various welding process commonly used in Federal-aid highway construction projects; Gas Welding. Arc Welding. Shielded Metal Arc Welding, Gas-Tungs ...

08/17/2026

Title : Buy America - Non-Domestic Flux for Welding of Bridges and Other Structures [Memorandum] Creator(s) : Horne, Dwight Corporate Creator(s) : United States. Federal Highway Administration. Office of Program Administration Corporate Contributor(s) : United States. Department of Transportation. Federal Highway Policy & Guidance Center Published Date : 2003-01-03 Series : Memoranda & Guidance: Information URL : https://rosap.ntl.bts.gov/view/dot/93008
Horne, Dwight (2003). Buy America - Non-Domestic Flux for Welding of Bridges and Other Structures [Memorandum].

Horne, Dwight "Buy America - Non-Domestic Flux for Welding of Bridges and Other Structures [Memorandum]" (2003)

Horne, Dwight "Buy America - Non-Domestic Flux for Welding of Bridges and Other Structures [Memorandum]" , 2003
Export RIS Citation Information. TY - Memorandum AU - Horne, Dwight A2 - United States. Federal Highway Administration. Office of Program Administration A3 - United States. Department of Transportation. Federal Highway Policy & Guidance Center AB - Thank you for your January 3 letter to the Federal Highway Administration that inquired about the applicability of the Buy America requirements to non-domestic flux used in welding. We have reviewed the various welding process commonly used in Federal-aid highway construction projects; Gas Welding. Arc Welding. Shielded Metal Arc Welding, Gas-Tungsten Arc Welding, Gas-Metal Arc, Submerged Are, and Resistance and hermite Welding. In all the instances, the metallic or non-metallic flux is applied to the surface to be joined, acting on application of heat to prevent oxide formation and to facilitate the flow of solder. Some metallic fluxes are made of alloy materials and are basically used for the same purpose, Therefore, the use of metallic/non-metallic flux in welding process is not covered by the Buy America requirements of23 CFR 635.410. Please note that the welding rod, which is typically an iron/steel product is covered, and the welding process is a manufacturing process that must take place domestically. AN - dot:93008 KW - Procurement KW - Welding KW - Fluxes KW - Policy KW - Recommendations LA - English PB - United States. Federal Highway Administration. Office of Program Administration PY - 2003-01-03 T2 - Memoranda & Guidance: Information TI - Buy America - Non-Domestic Flux for Welding of Bridges and Other Structures [Memorandum] M3 - Memorandum N1 - United States N1 - Public Domain UR - https://rosap.ntl.bts.gov/view/dot/93008 ER - DB - ROSA P

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