Drivers on State Route 6 at the Willapa River Bridge will encounter 10 weeks of around-the-clock single-lane traffic starting on Monday.
Drivers can expect five-minute delays while an automated signal alternates traffic across the bridge.
Reducing SR 6 to a single lane allows crews working with the Washington State Department of Transportation to rebuild the highway so it meets up with a newly constructed bridge just 12 feet southwest of the existing one.
Crews plan to shift single-lane traffic to the new bridge in late March and then start demolishing the existing, 85-year-old steel-truss bridge.
This work is part of WSDOT’s project to replace the bridge with a wider, more modern structure. The project is expected to be complete this summer.