Inspection & preservation for bridges & structures

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

1,557 work zone-related crashes

were recorded on state highways in 2025.

542 people were injured

in 2025 due to work zone-related crashes. 

29% increase in fatality collisions

in work zones from 2024 to 2025.