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Bridge Program

National Bridge Inspection Program

FHWA requires inspections of all bridges carrying traffic on public roads to insure their safety and reliability. This program was initially mandated in the Federal-aid Highway Act of 1968, which led to the National Bridge Inspection Standards established in the Federal Register in 1971.

The NBIS (23 CFR 650, Subpart C) require States to:

Washington State Bridges

In Washington State there are 8,156 bridges carrying public roads that are subject to the Federal inspection requirements. Of those structures, 3,299 are State owned, 4,064 bridges are owned by local agencies, and 793 owned by other agencies (Federal, Tribal, Parks, etc.).

Other key statistics for State and Local owned structures:

pie chart graph of Washington state and local owned bridge condition for year 2015. Seventy four point two percent were not deficient. Twenty one percent were functionally obsolete and four point eight percent were structurally deficient.

Page last modified on November 2, 2016
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