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King County Road Services - Capital Improvement Program

Alvord "T" Bridge #3130

Sept. 11, 2013 - Bridge removal to begin - learn more.

June 5, 2013 - Alvord T. Bridge permanently closed - learn more.

Project No.:  300810
Project limits:  78th Ave S. and S. 259th St
Project type:  Bridge
Thomas Bros. Map No.:  715J4

Project description

The Alvord “T” Bridge project will conduct a full demolition and removal of the existing bridge, cul-de-sac of the road south of the bridge, reconfiguration of the intersection just north of the bridge, and restoration of the river banks.

Why is King County doing this project?

The Alvord “T” Bridge is structurally deficient and functionally obsolete. The structural deficiency is due to severe rusting, section loss of steel members, rotting of timber members, the load limit imposed on crossing vehicles, and its seismic vulnerability. Its functional obsolescence is due in part to low overhead clearance, narrow road width, and substandard rails/guardrails. The bridge has the lowest sufficiency rating of all King County bridges currently open to traffic.

Project management phase:  Construction completed.

Status as of April 10, 2014

Demolition of the bridge and paving of the turn-around is physically completed. Riparian planting is completed.


See also

Environmental compliance for bridge activities External link graphic
King County Annual Bridge Report
Overlegal truck permit
Road closures
Road standards
Roads' future - learn what's needed to preserve our road network
Seattle bridges External link graphic
Title VI information
WSDOT Historic Bridges External link graphic

How does the CIP work?

The Road Services Division Capital Improvement Program (CIP) contains all design and construction and studies for improvements on roads, bridges or transportation facilities in the unincorporated areas of King County. We have a glossary to help explain our terms and jargon.

Budget and Funding

Vicinity map

Vacinity map

Project supervisor

Larry Jaramillo