Spokane County WA Public Works Homepage

Colbert Road Bridge No. 3703 Replacement

Project Information

Bridge No. 3703 | County Road Project C3316
Project Type:  Bridge Replacement
Project Manager:  Jaylene Atha
Design Year: 2024
Construction Year: 2027

Project Description

This bridge replacement is located on Colbert Road just east of Little Spokane Drive in north Spokane County, Section 21, T 27N, R 43E, WM. The existing bridge, which crosses the Little Spokane River, was constructed in 1953 and is currently posted with weight restrictions. Distress observed in the bridge girders and scour at the intermediate piers prompted the County to apply for and receive a federal grant in 2023 to replace the bridge. 

The existing bridge is 90 feet in length and 26 feet wide curb-to-curb. The new bridge will be constructed with 42” precast concrete girders with cast-in-place concrete deck founded on driven steel pile. It will be lengthened to approximately 120 feet long and widened to 34 feet curb-to-curb and will include two 11-foot vehicle lanes and two 6-foot wide shoulders. Approaches on the east and west ends of the bridge will be reconstructed. Both the bridge and roadway will remain in their original footprint and elevation with some widening to occur. The project length will stretch approximately 600 feet along Colbert Road. A temporary traffic detour will be in place during construction which will route traffic to Little Spokane Drive, Woolard Road and Hwy 2.

Project Duration

Slated for construction in 2027, the project is expected to take approximately 6 months to complete. Engineers are working closely with impacted property owners, regulators, and the public to ensure a successful project. The project will be funded by the Federal Highway Administration (FHWA).


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