Technical information on how to design, inspect and preserve Washington State Department of Transportation bridges and structures.

Bridge Design Manual

Provides WSDOT bridge design engineers guidance on the design criteria, analysis methods, and detailing procedures for the preparation of highway bridge and structure construction plans, specifications, and estimates.

Bridge engineering software and applications

Access our Alternate Route Project™ Applications, BridgeLink™ and other software and applications.

Contract submittal log

The Bridge and Structures Office has identified a Primary Bridge Technical Advisor (BTA) for the following construction projects in accordance with the WSDOT Bridge Design Manual Section 1.3.6 (pdf 950 kb). The Secondary BTA assigned will be the Primary's supervisor, unless otherwise noted in the BTA List.

Drawings available in pdf and dwg formats.

Plans and guides for lights and signal standards for transportation structures.

Contacts for questions on bridge & structure design, asset management and preservation