Steel Bridge Bearing Design And Detailing Guidelines


Introduction
The purpose of this guide is to present steel bridge bearing details that are cost effective, functional, and durable. Three major types of bridge bearings are presented.


1. Elastomeric bearings
The details are for steel reinforced elastomeric pads; however, much of the content is directly applicable to fiberglass reinforced, plain, and cotton duck pads as well.


2. High Load Multi-Rotational bearings (HLMR)
The details include pot, disc, and spherical bearings 3. Steel bearings



The details are primarily used for fixed bearing lines.

These bearing categories are sufficient to cover the vast majority of structures in the national bridge inventory. Special bridges may require different bearings.

This guide is not intended as a stand-alone document and does not supersede the AASHTO specifications. This guide does not include seismic isolation bearings. This is due to the complexity of the various

approaches to individual isolation bearing designs. This document contains many guidelines that are based on provisions of the AASHTO design and

construction specifications. Designers should note that changes made to the AASHTO specifications after the publication of this document may be in conflict with the guidelines contained herein. In this case, the provisions in the AASHTO specifications shall take precedence over the guidelines in this document.


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