Cable-stayed bridges have been firmly established as the most efficient and cost effective structural form in the 152-meter (m) to 472-m span range. With widespread popularity of cable-stayed bridges around the world, longer spans are being constructed employing increasingly longer stay cables. The stay cables are laterally flexible structural memb
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
2007-07-01
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Cable-stayed bridges have been firmly established as the most efficient and cost effective structural form in the 152-meter (m) to 472-m span range. With widespread popularity of cable-stayed bridges around the world, longer spans are being constructed employing increasingly longer stay cables. The stay cables are laterally flexible structural memb
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The International Conference on Long-Life Concrete Pavements was organized in October 2006 as a part of technology transfer activities for the Concrete Pavement Technology Program (CPTP), which operates within the Federal Highway Administration (FHWA) (Tayabji and Lim 2006). The conference objective was to provide a forum to address various aspects
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Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
Ultra-high performance concrete (UHPC) is a relatively new material which has demonstrated good durability properties, high compressive strength, and usable tensile resistance. Recent material characterization and structural behavior studies have shown the average compressive strength to be 28 ksi while a tensile strength of greater than 1.5 ksi ca
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2007-07-01
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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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Comprehensive Coverage -Geometric design considerations. -Traffic analysis and comparison with similar conventional design. -Signal settings. -Signing and marking. -Material or cost comparison. -Selection Process in a spread sheet.
The transportation of freight in the United States is predominantly an Interstate phenomenon. There is growing concern regarding the ability of the highway infrastructure to handle increasing traffic resulting in congestion on major trade corridors and metropolitan areas. Truck traffic contributes to worsening highway congestion at a faster rate th
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This report was written to communicate new and proven institutional and high-level operational techniques and strategies for achieving a coordinated, proactive approach to managing travel for all planned special events in a region in addition to facilitating successful and cost-effective management of specific planned special events. This technical
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The intent of this study is to explore the planning, design, and ongoing operation and maintenance of HOT facilities and to provide lessons learned and applicable technical guidance that will assist the state and local transportation planners and designers in determining the conditions where HOV conversion to HOT lanes is feasible. The study review
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The objectives of this research are to synthesize the current state of knowledge concerning the safety assessment of new or modified interchanges; develop a spreadsheet-based computational tool for performing safety assessments of interchanges; and identify gaps in knowledge concerning interchange safety assessment and future research needs to fill
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The intent of this study is to explore the planning, design, and ongoing operation and maintenance of HOT facilities and to provide lessons learned and applicable technical guidance that will assist the state and local transportation planners and designers in determining the conditions where HOV conversion to HOT lanes is feasible. The study review
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Cataloging and synthesizing existing methods for the design of roadway-stream crossings for fish passage began inJanuary 2005 with an extensive literature review covering the topics of culvert design and assessment to facilitatefish passage. A survey was posted online to gather input from design professionals across the country, and aCulvert Summit
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This User Manual describes the usage and operation of the spreadsheet-based Interchange Safety Analysis Tool (ISAT). ISAT provides design and safety engineers with an automated tool for assessing the safety effects of geometric design and traffic control features at an existing interchange and adjacent roadway network. ISAT can also be used to pred
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United States. Department of Transportation. Federal Highway Administration
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2007-06-01
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Self-propelled modular transporters (SPMTs) are computer-controlled platform vehicles that can move bridge systems weighing up to several thousand tons with precision to within a fraction of an inch. The prefabrication of bridges offsite under controlled conditions followed by rapid installation onsite can achieve quality installations with traffic
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This newsletter is a continuing series that is part of the outreach efforts to keep practitioners abreast of the current activities and findings of the TMIP project.
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