Washington State Bridges: Capitol Blvd Overcrossing

Capitol Boulevard Overcrossing (Bridge 5/322) on I-5 in Olympia, Washington was originally a four span steel plate girder bridge on concrete piers that was built in 1957. When Interstate 5 was widened in the 1980’s, the existing superstructure was retained, and elliptical, twin cell box arches were designed to replace the existing concrete piers. The cost of the reconstruction was $3,900,000, including $1,600,000 for the tieback retaining wall system.

Washington State Bridges: Capitol Blvd Overcrossing by Mark Yashinsky is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.