Inspection & preservation

Find information for inspecting and managing bridges and structures.

Bridge Inspection Manual

Specific guidance and technical details for bridge inspections are discussed in the Bridge Inspection Manual (M 36-64).

Bridge List

All structures for which the department has a maintenance responsibility is provided in the Bridge List (M 23-09).

Ferry Terminal Inspection Procedure Manual

Procedures for conducting structural inspections of ferry terminal facilities are provided in Ferry Terminal Inspection Procedure Manual (M 3105.05).

Transportation Structures Preservation Manual

Responsibilities for the inventory, inspection, rating, maintenance, damage repair and analysis of load carrying capacity of the transportation structures are provided in the Transportation Structures Preservation Manual (M23-11).

See all manuals and standards

14 fish passage projects were completed in 2020

improving access to 54.2 miles of upstream habitat.

11,959 incidents responded to

by WSDOT’s incident Response teams during second quarter of 2021, 15% more than same quarter in 2020.

41 Pre-existing Funds Projects Advertised

during the eighth quarter of the 2019-2021 biennium.