Bridge fires can cause rapid and severe loss of structural capacity. This loss of capacity often leads to major safety risks, network disruptions, and high economic impacts. A curated history of U.S. bridge fires in the 20th and 21st centuries is presented. This history identifies recurring ignition sources, contributing factors, and damage pattern
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This report presents a comprehensive methodology for evaluating cement content and layer thickness variability in cement-stabilized pavement layers using a nondestructive ground penetrating radar (GPR) technique. The research integrates laboratory calibration and field validation for two widely used stabilization practices: conventional soil-cement
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This study evaluated roadway runoff impacts on trout stream temperature and dissolved oxygen to support GDOT MS4 Permit compliance with Georgia Rule 391-3-6-.03(6) for trout streams. Using YSI® ProDSS, HOBO® MX-801 Dataloggers, and low-cost ESP32-based sensors, the GSU research team collected summer season data over two (2) consecutive years at 2-3
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The fire response of a potassium aluminosilicate matrix (geopolymer) carbon fiber composite was measured and the results compared to organic matrix composites being used for infrastructure and transportation applications. At irradiance levels of 50 kW/m2, typical of the heat flux in a well developed fire, glass-or carbon-reinforced polyester, vinyl
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This study was undertaken following the completion of a Small Business Innovation Research (SBIR) Phase 2 contract involving the fire hazards of aerosol cans. Tests were conducted on a newly designed aerosol can developed during the SBIR Phase 2 contract as well as two types of currently produced cans. The purpose was to compare the hazards associa
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The well-known bump-at-the-end-of-the-bridge often involving the joint between a bridge approach slab (BAS) and a bridge deck (as well as the associated slab cracking) has been a recurring issue over the years in many states. DOTs have reported differential settlement and cracking issues at this joint which has significantly reduced ride quality. P
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This report discusses Oklahoma's second experimental internally sealed concrete bridge deck. It differed from the first on in that it contained wax beads only in the top two inches as opposed to full depth and it covered the entire deck instead of just one span. The objective of this study was to gain experience in placing and heating a wax impregn
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The objective of this research study was to investigate possible techniques for measuring the brightness of the retro-reflective pavement markings on a highway surface. The measurements were to be made during daylight hours and from a moving vehicle. A practical field device, or instrument, was then to be designed and developed. During the course o
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This study develops a characterization of systems from the surface down to bedrock. alluvial deposits where fill settlement is alluvial soils in two river Study sites were located in a problem. Continuous undisturbed soil samples were taken. Unconfined compression and consolidation tests were run on the soil layers. The field testing included the s
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2026-03-11
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Special Issue - Weekly Motor Fuel Report
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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
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United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1992-11-01
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PDF
Motor vehicle crashes involving buses represent a serious safety problem in the United States that has not been properly recognized or addressed. In 1989, for example, 57,000 buses were involved in accidents, resulting in 15,000 bus occupant injuries and 50 bus occupant fatalities. In addition, these accidents resulted in 205 occupant fatalities in
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A novel Hardware-in-the-loop Simulation tool was constructed to show how modifications to signal timings would improve coordinated corridor performance. A total of 15 unique microsimulation models were developed and run three times each to test three case studies of bi-direction bandwidth optimization, cycle length sensitivity, and leading pedestri
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United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1994-05-01
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PDF
On October 1, 1992, the Federal Highway Administration/National Highway Traffic Safety Administration (FHWA/NHTSA) National Crash Analysis Center (NCAC) was established through a three-way contract between the Federal Highway Administration's Office of Safety and Traffic Operations R&D, the National Highway Traffic Safety Administration's Office of
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United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1993-09-01
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PDF
Research in the Aerodynamics Laboratory involves model testing, numerical modelling, static and dynamic structural analysis, and full scale measurements. A number of staff studies and Grants for Research Fellowship (GRF) student projects are currently underway in each of these areas.
United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1993-08-01
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PDF
Researchers who work in the Pavement Isothermal Test System (PITS) are currently developing mechanistic pavement design procedures. Based on fundamental material properties, these pavement design procedures will allow pavement designers to predict the performance of pavements before construction and help them select better pavement alternatives.
United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1994-03-01
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PDF
The Human Factors Laboratory provides a variety of environments for research pertaining to driver capabilities and limitations. The laboratory is comprised of an instrumented field test vehicle; two reconfigurable laboratories, called SIGNSIM and VIDSIM; and a Graphics Center, which supports the laboratories.
United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1995-04-01
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PDF
The Corrosion Control laboratory at the Turner-Fairbank Highway Research Center has the required equipment and personnel expertise to characterize coatings, and to evaluate their performance and durability by accelerated testing methods. Equipments and skills are also available to use state-of-the-art electrochemical techniques to evaluate the corr
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The meteorological parameters that have the greatest impact on drivers and their safety are rainfall, snow, ice, fog, and wind. To minimize the impact of these conditions, information can be provided to travelers en route or prior to departing, as well as to highway maintenance crews. The rapid response of appropriate measures can potentially save
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United States. Federal Highway Administration. Office of Engineering and Highway Operations R&D
1988-04-01
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PDF
The Pavement Performance Laboratory is located at the Federal Highway Administration's (FHWA's) Turner- Fairbank Highway Research Center in McLean, Virginia. The primary functions of this laboratory are to determine mechanical properties of pavement components for mechanistic design procedures, and to evaluate the structural response of prototype p
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United States. Federal Highway Administration. Office of Engineering and Highway Operations R&D
1988-04-01
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PDF
The Pavement Testing Facility is an outdoor full-scale pavement testing laboratory located at the Federal Highway Administration's (FHWA's) Turner-Fairbank Highway Research Center in McLean, Virginia. The purpose of the facility is to quantify the performance of full-scale test pavements trafficked with an accelerated rate of heavy axle loadings. F
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
1999-04-01
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PDF
Northern Arizona has more than 6 million visitors per year. More than 2 million of these visitors will explore the World Wide Web to learn more about their destination prior to their trip. For this reason, the Federal Highway Administration, in partnership with the Arizona Department of Transportation (DOT), sponsored the development of the AZ Trip
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
1999-04-01
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PDF
The city of Branson, Missouri, has a permanent population of around 4,400 and measures approximately 7 mi (11.3 km) along its main thoroughfare, State Highway 76. Branson attracts more than 6 million visitors per year. The congestion on State Highway 76 is severe (Level of Service F) during peak and some off-peak periods. The lack of right-of-way m
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The reports produced and the product of work done on the subject of Permanent Ground Anchor Walls include: (1) a report with four volumes- Summary Report of Research on Permanent Ground Anchor Walls, Volume I: Current Practices and Limiting Equilibrium Analyses, Volume II: Full-Scale Wall Tests and a Soil Structure Interaction Model, Volume III: Mo
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The national Intelligent Transportation Systems (ITS) program includes the development and application of advanced systems upon all parts of the transportation network, including rural areas. The U.S. DOT has developed the Advanced Rural Transportation Systems (ARTS) program to meet the needs of travelers in and through rural areas, as well as the
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The national Intelligent Transportation Systems (ITS) program includes the development and application of advanced systems upon all parts of the transportation network, including rural areas. The U.S. DOT has developed the Advanced Rural Transportation Systems (ARTS) program to meet the needs of travelers in and through rural areas, as well as the
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United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
1997-05-01
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PDF
The national Intelligent Transportation Systems (ITS) program includes the development and application of advanced systems upon all parts of the transportation network, including rural areas. The U.S. DOT has developed the Advanced Rural Transportation Systems (ARTS) program to meet the needs of travelers in and through rural areas, as well as the
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United States. Department of Transportation. Federal Highway Administration
1995-04-01
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PDF
The Geotechnical Laboratory at the TFHRC includes the soil mechanics, soil behavior, and foundations testing facilities. The primary functions of the laboratory are to determine mechanical properties of ground materials, and to evaluate soil-structure interaction for bridges and retaining walls. In addition the laboratory can perform rock mechanics
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The research team developed and tested a prototype machine learning (ML) framework to automate the identification of asphalt pavement cracking. The framework combines deep learning and image processing, trained using a large dataset of annotated pavement images collected from California roadways. Each image was labeled according to standardized dis
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United States. Department of Transportation. Federal Highway Administration
1988-12-01
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PDF
The Human Factors Laboratory (HFL) of the Office of Safety and Traffic Operations R&D, Federal Highway Administration (FHWA), provides a working environment for delineation of drivers' capabilities and limitations. Historically, the facility has been used to conduct applied studies evaluating the potential effectiveness of either new or modified tr
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United States. Department of Transportation. Federal Highway Administration
1988-12-01
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PDF
What is RSL? - It is a library of analytical tools and computer simulation models specifically designed for the investigation of vehicles impacting roadside hardware. Why do we need it? - Computer simulation of vehicle/barrier crashes is an essential element in the process of designing roadside hardware. The cost of computer simulation is considera
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United States. Department of Transportation. Federal Highway Administration
1988-08-01
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PDF
The delivery system for any new technology is an essential element in the acceptance and success of that new technology in the highway community. The Advanced Implementation Methods Facility develops and evaluates new technology transfer delivery systems.
The most recent pandemic exposed critical gaps in the aviation system’s ability to assess and manage communicable disease risks within the Safety Management System (SMS) framework. In response, a multi-year research effort developed the prototype, open-source Travel Risk In Pandemics (TRIP-X) simulation model to extend FAA Order 8040.4 Safety Risk
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United States. Department of Transportation. Federal Highway Administration
1988-06-01
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PDF
What is the FOIL? A research and learning center for highway engineers, scientists, and othersworking on roadside safety hardware. Why do we need it? The interaction between driver, vehicle, and roadside safety hardware is very complex. An understanding of this interaction is the first step leading to safer roadside safety hardware.
United States. Department of Transportation. Federal Highway Administration
1988-04-01
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PDF
The Bituminous Mixtures Laboratory is located at the Federal Highway Administration's (FHWA's) Turner-Fairbank Highway Research Center in McLean, Virginia. The primary functions of this laboratory are to design and analyze asphalt concrete mixtures, and to evaluate methods for testing asphalt concrete. Mixtures which are evaluated in this laborator
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United States. Department of Transportation. Federal Highway Administration
1988-04-01
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PDF
The Petrographic Laboratory is located at the Federal Highway Administration's (FHWA's) Turner- Fairbank Highway Research Center in McLean, Virginia. The primary functions of this laboratory are to determine the suitability of aggregates for use in various highway materials, to evaluate the frictional properties of aggregate and pavement samples, a
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Asphalt pavement cracking is one of the most critical distresses affecting pavement performance and service life. When pavement deteriorates, it can lead to safety hazards, higher vehicle maintenance costs, and expensive repairs for cities and states—making early detection essential for everyone who relies on the roadway system. To address this cha
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The Aviation Infectious Risk and Safety (AIRS) program addresses the U.S. Government Accountability Office (GAO) recommendation for stronger federal leadership and coordination on communicable disease transmission in air travel. Led by the Federal Aviation Administration (FAA), AIRS integrated The Boeing Company, the Centers for Disease Control and
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Texas has the highest number of fatal crashes involving large trucks in the US since 1994, and this number in 2012 grew by 82% from 299 crashes in 2009. Due to the size and weight, crashes involving large trucks are usually more destructive, and therefore are a major health and safety concern for Texans. Studies are needed to better understand the
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Crime Prevention through Environmental Design (CPTED) uses design principles to engineer safer spaces through the management of both built and natural environmental features. CPTED principles aim to reduce the chances and fear of criminal activity by designing spaces that both deter criminal activity and build community. Notably, public transportat
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The objective of this project is to study the application of fusion-bonded epoxy coatings of rebars in bridge decks. A thin film of epoxy resin is fusion bonded to the reinforcing steel as a prevention against corrosion. A monitoring system was established to measure electrical resistance for several years after installation.
The purpose of this report is to establish soil properties of Oklahoma flood plain (alluvial) soils for drilled shaft design. Also, to establish a correlation between shear strength (Su) obtained from unconfined compression test and N values obtained from both Texas Cone Penetrometer and Standard Penetration Test for Oklahoma flood plain soils. Thi
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United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
2000-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
1999-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
1998-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
1997-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
1996-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
1995-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
1994-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
United States. Department of Transportation. Great Lakes St. Lawrence Seaway Development Corporation
1961-01-01
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Saint Lawrence Seaway News
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PDF
The Saint Lawrence Seaway Development Corporation – now known as the Great Lakes St. Lawrence Seaway Development Corporation – is a government corporation within the U.S. Department of Transportation. News releases cover topics pertaining to construction, operations, and maintenance of the U.S. infrastructure and waters of the St. Lawrence Seaway.
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United States Department of Transportation
Rowles, L. Stetson