The Florida Department of Transportation has released a report that explores the development of a test to evaluate the healing behavior of a dense- and open-graded asphalt mixture.

TRB’s second Strategic Highway Research Program (SHRP 2) has released a project brief that highlights Transportation Project Impact Case Studies (T-PICS). T-PICS is a web-based tool designed to allow for economic impacts to more easily be considered during community visioning for transportation, or during public and stakeholder involvement for long-range system planning or corridor planning. Vi...

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 429: Geotechnical Information Practices in Design-Build Projects addresses how states use geotechnical information in solicitation documents and contracts for design-build highway projects. The report examines current practices regarding the allocation of geotechnical risk and the level of geotechnical information provided wi...

The U.S. Federal Highway Administration has released a report that explores issues to consider when deploying ultra-high performance concrete construction material for the construction of prefabricated bridge elements and systems. 

This fall, TRB will release Rockfall: Characterization and Control, which will address rockfall hazard identification and evaluation, investigation process, mitigation options, and maintenance and management programs. The 400 page publication will include a DVD with video clips of rockfall field tests and several historical movies documenting rockfall field activities. Because of the expec...

The Utah Department of Transportation has released a report that explores monitoring concrete precast panels for bridge decks that are reinforced with Glass Fiber Reinforced Polymer (GFRP) bars.

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on safety and operations. The report is structured to correspond to chapters in th...

The Oregon Department of Transportation has released a report that evaluates laboratory tests on ten full-size reinforced concrete girders, representative of in-situ bridge members, to determine the performance of near surface mounted-carbon fiber reinforced polymer (NSM-CFRP) retrofitting for shear strengthening.

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 428: Practices and Procedures for Site-Specific Evaluations of Earthquake Ground Motions identifies and describes current practice and available methods for evaluating the influence of local ground conditions on earthquake design ground motions on a site-specific basis. The report focuses on evaluating the response of soil de...

The Oregon Department of Transportation has released a report that explores improvements and new uses for 3D laser scanning in highway construction, maintenance, and monitoring to enable state transportation departments to detect problematic areas and hazards before they occur.