SR 6 Willapa River Bridge Replacement

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  • Aug 28, 2014

Old Structure Insufficient
The existing SR 6 Willapa River Bridge is a narrow steel-truss structure that was built in 1929. At 22 feet wide, it is too narrow to accommodate the types and number of vehicles that cross it today. The bridge also does not meet current federal seismic, flood, or structural standards.

New Structure Designed
It is being replaced with a new structure that is 36 feet wide (12-foot lanes and 6-foot shoulders), and is being built utilizing precast concrete girders and a cast-in-place concrete deck. This increased width will assist to improve traffic safety and increase mobility on a critical east-west route between Interstate 5 and the Southwest Washington coast.

To assist with increasing the life-span of the structure epoxy-coated reinforcing steel was used in the bridge deck.

Project Timeline:
Construction began in June of 2013 and to be completed in the Fall of 2014.