The American Association of State Highway and Transportation Officials and the National Steel Bridge Alliance have jointly issued “Steel Bridge Bearing Guidelines, 2nd Edition, G9.1–2022.”
[Above image by AASHTO]
This publication presents steel bridge bearing design guidelines and construction details that are cost-effective, functional, and durable.
It includes four major types of bridge bearings: (1) Elastomeric; (2) High Load Multi-Rotational or HLMR; (3) Steel; and (4) Seismic Isolation, which is new in this edition.
These four types of bridge bearings are viewed as sufficient to cover most structures in the national bridge inventory. Each bearing type is presented as its own section within the guide, and the information included is intended to permit efficient design, fabrication, installation, and maintenance of each bearing type.
AASHTO and NSBA work together to develop specifications, codes, standards, and policies in an effort to unify the existing diverse requirements governing steel bridge construction.
All AASHTO-NSBA Steel Bridge Collaboration publications are available to download. Click here for a complete list of AASHTO-NSBA Steel Bridge Collaboration publications.