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 BTA List has been moved to MS Teams (HQ-Bridge-BTA).  You can click the link to join the Team and view all current BTA assignments. This Team also provides additional resources and links for the program in the Resources tab.

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