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Transportation : Bridges and Other Structures
NCHRP Report 654: Evaluation and Repair Procedures for Precast/Prestressed Concrete Girders with Longitudinal Cracking in the Web

TRB's National Cooperative Highway Research Program (NCHRP) Report 654: Evaluation and Repair Procedures for Precast/Prestressed Concrete Girders with Longitudinal Cracking in the Web explores the acceptance, repair, or rejection of precast/prestressed concrete girders with longitudinal web cracking. The report also ...

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NCHRP Report 647: Recommended Design Specifications for Live Load Distribution to Buried Structures

TRB's National Cooperative Highway Research Program (NCHRP) Report 647: Recommended Design Specifications for Live Load Distribution to Buried Structures explores recommendations to revise the American Association of State Highway and Transportation Officials Load and Resistance Factor Design Bridge Design Specifications ...

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NCHRP Report 656: Criteria for Restoration of Longitudinal Barriers

TRB's National Cooperative Highway Research Program (NCHRP) Report 656: Criteria for Restoration of Longitudinal Barriers explores the identification of levels of damage and deterioration to longitudinal barriers that require repairs to restore operational performance. ...

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Review of the Bureau of Reclamation's Corrosion Prevention Standards for Ductile Iron Pipe

Ductile iron pipe (DIP) was introduced about 50 years ago as a more economical and better-performing product for water transmission and distribution. As with iron or steel pipes, DIP is subject to corrosion, the rate of which depends on the ...

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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 ...

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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. ...

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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 ...

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NCHRP Report 632: An Asset-Management Framework for the Interstate Highway System

TRB's National Cooperative Highway Research Program (NCHRP) Report 632: An Asset-Management Framework for the Interstate Highway System explores a framework for applying asset-management principles and practices to managing Interstate Highway System investments. ...

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NCHRP Report 620: Development of Design Specifications and Commentary for Horizontally Curved Concrete Box-Girder Bridges

TRB's National Cooperative Highway Research Program (NCHRP) Report 620: Development of Design Specifications and Commentary for Horizontally Curved Concrete Box-Girder Bridges explores proposed specifications and examples for the design of horizontally curved concrete box-girder highway bridges.



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NCHRP Report 628: Self-Consolidating Concrete for Precast, Prestressed Concrete Bridge Elements

TRB's National Cooperative Highway Research Program (NCHRP) Report 628: Self-Consolidating Concrete for Precast, Prestressed Concrete Bridge Elements explores recommended guidelines for the use of self-consolidating concrete (SCC) in precast, prestressed concrete bridge elements. The report examines the selection of constituent ...

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