Browse All Topics

Transportation

Transportation : Maintenance and Preservation
NCHRP Synthesis 398: Cathodic Protection for Life Extension of Existing Reinforced Concrete Bridge Elements

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 398: Cathodic Protection for Life Extension of Existing Reinforced Concrete Bridge Elements examines the use of cathodic protection by state transportation agencies for controlling corrosion on existing reinforced concrete bridge elements. The ...

More
NCHRP Synthesis 397: Bridge Management Systems for Transportation Agency Decision Making

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 397: Bridge Manangement Systems for Transportation Agency Decision Making explores how bridge management systems are employed by transportation agencies in making network-level decisions on resource allocations for their bridge programs. ...

More
NCHRP Report 637: Guidelines for Dowel Alignment in Concrete Pavements

TRB's National Cooperative Highway Research Program (NCHRP) Report 637: Guidelines for Dowel Alignment in Concrete Pavements examines the effects of dowel misalignment on concrete pavement performance, and highlights measures for reducing misalignment and its adverse effect.



More

NCHRP Synthesis 394: Reducing Litter on Roadsides

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 394: Reducing Litter on Roadsides explores the state of the practice in reducing roadside litter as it involves state departments of transportation (DOTs). The report provides information concerning the prevention and removal ...

More
NCHRP Synthesis 389: Performance-Based Contracting for Maintenance

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 389: Performance-Based Contracting for Maintenance explores experience with performance-based maintenance contracting in places where it has been adopted, including such issues as whether it has the potential to reduce costs and improve ...

More
NCHRP Report 639: Adhesive Anchors in Concrete Under Sustained Loading Conditions

TRB's National Cooperative Highway Research Program (NCHRP) Report 638: Guidelines for Guardrail Implementation explores guidance on selecting the appropriate barrier performance level for the installation of longitudinal barriers.



The following appendices to NCHRP Report 638 are ...

More
NCHRP Report 626: NDT Technology for Quality Assurance of HMA Pavement Construction

TRB's National Cooperative Highway Research Program (NCHRP) Report 626: NDT Technology for Quality Assurance of HMA Pavement Construction explores the application of nondestructive testing (NDT) technologies in the quality assurance of hot-mix asphalt (HMA) pavement construction. Supplementary material to NCHRP ...

More
TCRP Report 131: A Guidebook for the Evaluation of Project Delivery Methods

TRB's Transit Cooperative Research Program (TCRP) Report 131: A Guidebook for the Evaluation of Project Delivery Methods examines various project delivery methods for major transit capital projects. The report also explores the impacts, advantages, and disadvantages of including operations and ...

More
NCHRP Synthesis 385: Information Technology for Efficient Project Delivery

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 385: Information Technology for Efficient Project Delivery explores "best practices" for the seamless sharing of information throughout all phases of the project delivery process. ...

More
NCHRP Report 621: Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete

TRB's National Cooperative Highway Research Program (NCHRP) Report 621: Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete explores tests to identify and measure residues on the surface of steel pre-stressing strands and to establish thresholds for residue ...

More