New roundabout on SR 500 at 182nd Avenue in Clark County improves safety and slows speeds

A 10-day closure of the intersection begins Aug. 3

CLARK COUNTY – Beginning Wednesday, Aug. 3, Clark County travelers will need to find an alternate route while construction takes place at the intersection of Fourth Plain Boulevard, also known as State Route 500, and Northeast 182nd Avenue to install a roundabout.

On July 11, Washington State Department of Transportation contractor, Thompson Bros. Excavating, began construction of a new compact roundabout to improve safety, reduce crashes and keep traffic flowing within the intersection from all directions.

A roundabout was chosen to improve safety at this intersection based on crash data collected between 2013 and 2017. The data shows a history of crashes along this stretch of highway, most of which were rear-end or T-bone crashes. A roundabout will improve safety by reducing the potential for these severe types of collisions, while keeping traffic flowing through the intersection.

What travelers should expect

  • Beginning Wednesday, Aug. 3 at 7:00 p.m., the intersection of Fourth Plain Boulevard and 182nd Avenue will close for 10 days while the roundabout is built. Travelers will need to find an alternate route.
  • Additional construction work before and after the total closure will include single lane closures during the day and night.  
  • During the 10-day closure, a temporary signal will be used at Northeast 88th Street and Ward Road.

Additional Clark County construction

  • Contractor crews are paving a 10-mile stretch of Fourth Plain Boulevard between Northeast 162nd Avenue and Northeast Leadbetter Road. This work will continue until the end of August 2022.
  • Travelers should also be aware of a nearby Clark County Public Works project to replace the Davis Bridge, which is expected to complete by the end of 2022.

For the most up-to-date construction information, travelers can get real-time travel information on the WSDOT website. Travelers are encouraged to sign up for county-specific email updates. Real-time traffic information is available on the WSDOT app and the WSDOT regional Twitter account.

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