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There’s a new manual out from the Association of American Safety and Highway Transportation Officials (AASHTO) that incorporates allowable stress, load factor, and load and resistance factor rating methods.
The book provides guidelines for the procedures and policies used to determine the physical condition, maintenance needs and load capacity of highway bridges. It also includes rating exmaples.
The publication is intended to assist bridge owners in establishing inspection procedures and evaluation practices that meet the National Bridge Inspection Standards (NBIS).
It supersedes both the “Guide Manual for Condition Evaluation and Load and Resistance Factor Rating (LRFR) of Highway Bridges,” 1st Edition and 2005 Interim, and the “Manual for Condition Evaluation of Bridges,” 2nd Edition with 2001 and 2003 Interim Revisions.
For more information, go to https://bookstore.transportation.org/item_details.aspx?ID=1343.