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Service Limit State Design for Bridges (R19B)

Service Limit State Design for Bridges (R19B)

Product Overview

The existing Load and Resistance Factor Design (LRFD) Bridge Design Specifications are federally mandated for all bridge designs in the United States using federal funds. The SHRP2 product, Service Limit State Design for Bridges (R19B), identified the service limit states that can be statically calibrated to produce uniform performance with the goal of generating a 100-year design life for bridges. The SHRP2 research has produced a calibration process that can be adjusted and applied to any limit state. The calibration of current limit states resulted in proposed revisions to the LRFD Specifications that may alter how bridges are designed across the country. Several of the proposed revisions have already been adopted by AASHTO’s Subcommittee on Bridges and Structures (SCOBS). These adopted revisions are now part of the AASHTO LRFD Specifications and the federal rule.

Tools and Technologies
Presentations and Webinars
Implementation Assistance Program
  • Federal Lands Highway used Service Limit State Design for Bridges through the Implementation Assistance Program (IAP). They received User Incentive awards through Round 7 of the IAP.
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