NSBA Guide to Navigating Routine Steel Bridge Design

AASHTO LRFD Bridge Design Specifications, 9th Edition
This guide is intended to complement the AASHTO LRFD Bridge Design Specifications (AASHTO LRFD BDS) and addresses the design of steel superstructures for "routine steel l-girder bridges." It illustrates which provisions of the AASHTO LRFD BDS are applicable to the design of these types of structures, and perhaps more importantly, which provisions are not applicable or are only partially or conditionally applicable.
If a given bridge somehow falls partially outside the limits of the definitions of a "routine steel l-girder bridge" or outside the exclusions of this scope, this guide may still provide value to designers. The purpose of this guide is to help engineers streamline the design process, avoid unnecessary or misguided effort, and simplify their approach to the necessary tasks associated with the design of a more routine steel l-girder bridge.
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