Advances in State Bridge Load Rating Processes and Practices: A Summary Report of 2024 Bridge Load Rating Peer Exchanges

Dahlberg, Justin; Liu, Zhengyu; Phares, Brent; Iowa State University. Bridge Engineering Center

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Advances in State Bridge Load Rating Processes and Practices: A Summary Report of 2024 Bridge Load Rating Peer Exchanges

2024-12-01
By Dahlberg, Justin ; Liu, Zhengyu ; Phares, Brent

English

Details You May Also Like

Details:

Creators:

Dahlberg, Justin ; Liu, Zhengyu ; Phares, Brent

Dahlberg, Justin ; Liu, Zhengyu ; Phares, Brent Less -
Corporate Creators:

Iowa State University. Bridge Engineering Center
Contributors:

Gao, Lubin ; Chappetta, Remy ; Lutgen, Ed ; Nix, Becky ; Garber, David ; ... More +

Gao, Lubin ; Chappetta, Remy ; Lutgen, Ed ; Nix, Becky ; Garber, David ; Drda, Thomas S. Less -
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
Subject/TRT Terms:

[+]

Bridges Load And Resistance Factor Design Load Factor Overweight Loads Peer Groups
Publication/ Report Number:

FHWA-HIF-24-113
Resource Type:

Tech Report
Right Statement:

Public Domain
Geographical Coverage:

United States
Edition:

Final Report
Contracting Officer:

Gao, Lubin; Chappetta, Remy
Corporate Publisher:

United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
Abstract:

This report reviews State Department of Transportation (DOT) practices related to bridge load rating, posting, and permitting procedures, analyzing publicly available documents. It examines previous versions of the National Bridge Inspection Standards (NBIS) and the most recent 2022 update, alongside the AASHTO Manual for Bridge Evaluation (MBE) and its interim revisions. The review highlights both common and unique practices across States in assessing bridge load-carrying capacity, which is essential for preservation and public safety. Routine load ratings are typically based on design plans, field measurements, and inspection reports, while more advanced methods incorporate sophisticated analytical techniques like 2D and 3D finite element models. In 2024, peer exchange meetings were held in Salt Lake City, UT, and Pittsburgh, PA, where participating transportation agencies discussed five key topics: State truck size and weight limits, consideration of deterioration in bridge load rating, timely re-rating and posting, structural analysis for permit loads, and research and technology. This report summarizes the meetings and their contributions to advancing bridge load rating practices across the U.S.
Format:

PDF
Funding:

693JJ319D000020
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha-512:4c98c8f14d0fce07849b8ef8a9b3b9b80ae9d91b87b4048546e522d6b9207c0f35efba66a79b789aabccc832db761dc3e54d9485834bd22266e44a7d201939b9
Download URL:

https://rosap.ntl.bts.gov/view/dot/80605/dot_80605_DS1.pdf
File Type:

[PDF-900.26 KB]