This FHWA project seeks to research bearing resistance of large diameter open-end piles (LDOEPs) using the load and resistance factor design framework. The research evaluates existing static design methods using a new load test data set of steel LDOEPs in cohesive, cohesionless, and mixed soil conditions. The analysis includes development of steel
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Researchers at the University of Nevada, Reno explored the feasibility of a self-sensing adaptive bridge bearing system. In this system, rubber bearings and sensors made of a magnetorheological elastomer (MRE) (or controllable rubber) respond to loads and vibrations through automated changes in stiffness. The system has a wireless, self-sensing cap
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2020-02-01
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Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste
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United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
2020-02-01
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e-Construction practices are maturing quickly, changing the way and the rate at which technology is being implemented. Information technology (IT) governance models within State government vary. While some State departments of transportation (DOT) still have a dedicated IT Division, most States have consolidated their IT governance and services to
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This annual summary reports the activities of the Federal Highway Administration (FHWA) on Major Projects for Fiscal Year (FY) 2018, as of October 1, 2018. The FHWA takes a leadership role in advancing transportation initiatives through the stewardship and oversight of Major Projects, which are defined as those with a total cost of $500 million or
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Access is an essential service common to all communities. Residents need access to healthy food, healthcare, social connections, and jobs or education. Businesses need a productive workforce and consistent customer base. Workers need reliable access to jobs at an affordable commuting cost. Communities that integrate transportation and business inte
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Communities consist of intertwined systems of land use, transportation, and the built environment. How one system is managed impacts all other systems – increasing the need to work together to make positive change. As a result, health and transportation concerns can be found in different public agencies with similar or supportive goals. By working
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Active transportation refers to the ability to satisfy your transportation needs by safely walking and biking to your destination. The increased physical activity has benefits such as lower rates of chronic diseases like heart and respiratory illness. Transportation agencies and communities enable safe, equitable, active transportation by providing
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Streets designed and operated to enable safe use for walking, bicycling, driving, and transit offer something for everyone. These “Complete Streets” provide safer places to travel and increase physical activity at the same time. In many cases, economic growth is enabled by connecting people to jobs, shopping, and services. Complete streets reflect
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Public transit systems can improve the community – even for those who never use the bus! Young people, older people, people with disabilities, and those without car access can maintain their independence. Transit can reduce air pollution by taking cars off the road. In addition, transit can boost property values, attract new businesses, and generat
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Rural areas and small towns can benefit from diverse transportation options, just like urban and suburban areas. However, some of the specific needs and opportunities for economic benefit are different. Some rural areas are increasing in population, especially among retirees and senior citizens, who depend on transportation options. A growing trend
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On September 25th, 2018, an FHWA-sponsored EDC-4 “How” Pavement Preservation State Peer-to-Peer Exchange was conducted in Lexington, Kentucky, with one FHWA representative and eight DOT representatives from Kentucky, two from Tennessee, and two from West Virginia. Mr. Larry Galehouse with the National Center for Pavement Preservation and Mr. Larry
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This report, entitled Use of LTPP SMP Data to Quantify Moisture Impacts on Fatigue Cracking in Flexible Pavements, analyzes the impact of moisture infiltration through surface cracking on the longevity or performance of a pavement.
United States. Department of Transportation. Federal Highway Administration. Office of Safety
2020-02-01
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Over time, the pavement surface may become polished, thereby reducing the available pavement friction and creating a higher risk of crashes. Also, intersections are locations where friction demand is higher due to slowing, stopping, and turning actions that require an adequate supply of friction. High Friction Surface Treatment (HFST) consists of a
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2020-01-23
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This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
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The objective of the Work Zone Data Exchange (WZDx) Specification is to enable infrastructure owners and operators (IOOs) to make harmonized work zone data available for third party use. The project aims to get data on work zones into vehicles to help automated driving systems (ADS) and human drivers navigate more safely. The main objectives of the
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Across the United States, state and local transportation agencies are tasked with collecting transverse profile measurements. Collection of the data is carried out with a variety of systems that operate at the prevailing speed limit. With the wide range of systems used to collect data it is critical that transportation agencies know the system used
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United States. Federal Highway Administration. Office of Planning, Environment, and Realty
2020-01-09
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PDF
This digest shares the latest information from a range of Federal and non-Federal sources, addressing transportation and its relationship to the human environment. Through this information exchange, FHWA hopes to foster dialogue at all levels and continue to further the state of the practice on these important topics in support of safety; infrastru
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United States. Department of Transportation. Federal Highway Administration
2020-01-08
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This is a compendium of interviews with certain state departments of transportation (DOTs) regarding their Planning and Environment Linkages (PEL) implementation. The DOTs provided valuable insights and lessons learned that informed the development of the Federal Highway Administration’s (FHWA’s) PEL Guidebook. These summaries are not comprehensive
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