The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
Bridges are among the cultural resources that must be considered for historic significance under the Historic Preservation Act of 1966. The Virginia Transportation Research Council conducted a study of Virginia's movable span bridges in 1996-1997, thus establishing an historic context for all such bridges in Virginia. This study was carried out in
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This interim report describes the progress during the first year of a project to develop robotics hardware for nondestructive evaluation of steel structures. The project objectives are to (1) develop and test an improved prototype (POLECAT-II) crawling robotics system for the remote nondestructive evaluation (NDE) of high-mast light poles, and (2)
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One hundred and fifty-six exposure slabs have been constructed with and without a variety of combinations of corrosion inhibiting admixtures and topically applied inhibitors. To accelerate corrosion one hundred and thirty-six of the slabs were constructed with concrete that surrounded the top mat of reinforcement with chloride contents of 3,6, 10,
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This report describes the development of a technique for obtaining a reliable assessment of the condition of steel bridge pins already determined by ultrasound to contain imperfections. The details of a technique for performing high-definition ultrasonic scans of pins in the field are described. Results demonstrating this technique on specially fab
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The objective of this study was to explore all possible means of preventing ice from bonding to pavement. New technologies, including new chemicals, new means of application, pavement conditioning, and timing of chemical application, were explored. The researcher recommends that (1) maintenance personnel at all levels be trained in anti-icing opera
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Wetland mitigation and stormwater management provisions in the 1987 Clean Water Act (CWA) significantly impact transportation agencies. CWA Section 404 stipulates that when highway construction results in the displacement of natural wetlands, the highway agency is required to create artificial wetlands to compensate for that loss. Section 402 direc
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The application of a mineral admixture or a combination of a mineral admixture with corrosion inhibitor are the methods used for the corrosion protection for reinforced concrete bridges. The results of a 1.5-year study on evaluation of three concretes with fly ash, slag cement (SC), and silica fume (SF) and one concrete with silica fume and a corro
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An index to Office of Aviation Medicine Reports (1964-1971) and is presented as a quick reference for those engaged in aviation medicine and related activities. It provides a listing of all FAA aviation medicine reports published from 1961 through 1967 by year, number, author, subject and title
The Center for Transportation Research (CTR) performed a systematic review of applicable specifications in the Texas Department of Transportation (TxDOT) standard specifications book, "Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges," and those subsequently adopted Special Specifications that may be applic
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This handy reference guide outlines the range of resources available to assist highway agencies and industry in implementing the Superpave system for asphalt mix design. This list is not exhaustive, however, as many other organizations are involved in the Superpave implementation effort. Additional information can be obtained from such sources as y
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In the aging highway systems the problems of fatigue-induced damage and cracking in metal structures are very severe. Many such systems are operating even beyond their design lifetime, which requires more than the originally prescribed inspection cycles. In order to reduce the cost, increase testing efficiency and reliability, which subsequently im
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This report presents the analysis conducted on relating pavement performance or response measures and design considerations to specific pavement layers utilizing data contained in the Long-Term Pavement Performance Program National Information Management System. The goal of this research activity was to enhance implementation and use of the 1993 AA
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The Louisiana Offshore Oil Port (LOOP) facilities in coastal Louisiana provide the United States with the country's only Superport for off-loading deep draft tankers. The three single-point mooring (SPM) structures connected by pipelines to a platform mounted pumping station are located west of the Mississippi River delta, 30 kilometers southeast o
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In recognition of the potential for significant environmental impacts much attention was given to environmental safeguards by state and federal agencies and by the Superport developers. Because of the potential risks associated with the construction and operation of the Superport, both state and federal licenses required environmental monitoring of
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The proposed construction and use of facilities in an environmentally sensitive area led to questions about various consequential environmental impacts arising from the following activities: 1) oil storage caverns were created by leaching out a salt dome at Clovelly. The water used to leach the cavern was sent, by pipeline, to the offshore disposal
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The complex region of interest is associated with the Mississippi River deltaic plain. The estuarine portion (Barataria Basin) has resulted from the subsidence of abandoned river distributaries and associated marsh; the offshore region is strongly influenced by the discharge plumes from the present data. The hydrographic data sets collected by the
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The Database (Part I 1, 2, 3, 4) of transportation-markings: a study in communication monograph series draws together the several various dimensions of T-M. It shares this drawing togther function with the General Classification (Part H). But, paradoxically, Part H and Part I draw together by focusing on the individual entity; each T-M phenomenon.
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The objectives of this research project were to develop a comprehensive and clearly defined research program to define,measure, and quantify driver perception of hazards as it relates to highway design, operations, and safety, standards This wasaccomplished through a systematic research and development effort that defined six research projects. The
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