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Transportation : Bridges and Other Structures
NCHRP Report 683: Protocols for Collecting and Using Traffic Data in Bridge Design

TRB's National Cooperative Highway Research Program (NCHRP) Report 683: Protocols for Collecting and Using Traffic Data in Bridge Design explores a set of protocols and methodologies for using available recent truck traffic data to develop and calibrate vehicular loads for ...

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NCHRP Report 675: LRFD Metal Loss and Service-Life Strength Reduction Factors for Metal-Reinforced Systems

TRB's National Cooperative Highway Research Program (NCHRP) Report 675: LRFD Metal Loss and Service-Life Strength Reduction Factors for Metal-Reinforced Systems explores the development of metal loss models for metal-reinforced systems that are compatible with the American Association of State Highway ...

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NCHRP Report 679: Design of Concrete Structures Using High-Strength Steel Reinforcement

TRB's National Cooperative Highway Research Program (NCHRP) Report 679: Design of Concrete Structures Using High-Strength Steel Reinforcement evaulates the existing American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications relevant to ...

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NCHRP Report 678: Design of FRP Systems for Strengthening Concrete Girders in Shear

TRB's National Cooperative Highway Research Program (NCHRP) Report 678: Design of FRP Systems for Strengthening Concrete Girders in Shear offers suggested design guidelines for concrete girders strengthened in shear using externally bonded Fiber-Reinforced Polymer (FRP) systems.

The guidelines address ...

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NCHRP Report 682: Scour at Wide Piers and Long Skewed Piers

TRB's National Cooperative Highway Research Program (NCHRP) Report 682: Scour at Wide Piers and Long Skewed Piers explores recommendations for a predictive equation for equilibrium local scour and a potential equation for predicting scour evolution rates at wide piers and ...

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NCHRP Report 681: Development of a Precast Bent Cap System for Seismic Regions

TRB's National Cooperative Highway Research Program (NCHRP) Report 681: Development of a Precast Bent Cap System for Seismic Regions explores the development and validation of precast concrete bent cap systems for use throughout the nation's seismic regions.

The report ...

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NCHRP Report 668: Framework for a National Database System for Maintenance Actions on Highway Bridges

TRB's National Cooperative Highway Research Program (NCHRP) Report 668: Framework for a National Database System for Maintenance Actions on Highway Bridges explores a potential framework that provides a uniform format for collecting, reporting, and storing information on bridge maintenance actions ...

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NCHRP Research Results Digest 349: Evaluation of Existing Roadside Safety Hardware Using Manual for Assessing Safety Hardware (MASH) Criteria

TRB's National Cooperative Highway Research Program (NCHRP) Research Results Digest 349: Evaluation of Existing Roadside Safety Hardware Using Manual for Assessing Safety Hardware (MASH) Criteria explores the safety performance of widely used non-proprietary roadside safety features by using MASH. Examples ...

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NCHRP Report 655: Recommended Guide Specification for the Design of Externally Bonded FRP Systems for Repair and Strengthening of Concrete Bridge Elements

TRB's National Cooperative Highway Research Program (NCHRP) Report 655: Recommended Guide Specification for the Design of Externally Bonded FRP Systems for Repair and Strengthening of Concrete Bridge Elements examines a recommended guide specification for the design of externally bonded Fiber-Reinforced ...

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NCHRP Report 651: LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures

TRB's National Cooperative Highway Research Program (NCHRP) Report 651: LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures explores recommended changes to Section 10 of the American Association of State Highway and Transportation Officials' Load Resistance Factor Design ...

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