NW Cornelius Pass Road will close from mid-July to late September 2020 between Highway 30 and NW Skyline Blvd. during completion of safety improvements.  The road closure is expected to begin before the morning commute on Monday, July 13. Access for local and emergency traffic will be provided up to NW 8th Ave., where a culvert will be replaced.

Closing the road for construction will impact many drivers, especially drivers of large trucks.  Several factors influenced the traffic plan:

  • The work zone is too narrow to safely keep one lane of traffic open.
  • Keeping one lane open during the work would create long traffic backups and increase the construction schedule and cost.
  • The detour routes are longest for trucks carrying hazardous cargo, followed by large trucks, followed by cars and small trucks.

Map graphic of detour route described in text.
Detour routes for cars and pickup trucks, Cornelius Pass Safety Improvements 2020

Detour for Cars and Pickup Trucks

  • From Highway 30, use NW Newberry Road to NW Skyline Blvd. to NW Cornelius Pass Road. The westbound route is the reverse.
  • A temporary traffic signal will operate at NW Newberry Road and Highway 30 to allow detour traffic to safely turn left or right onto Highway 30.

Detour for Large Trucks

Large trucks are not permitted on side roads near NW Cornelius Pass Road, including the detour route for cars and pickup trucks.

  • The westbound detour for trucks from Highway 30 is south to I-405 to west on Highway 26 to NW Cornelius Pass Road.
  • The eastbound detour is the reverse.

Detour for Trucks with Hazardous Cargo

Trucks carrying hazardous cargo are not permitted to use the Vista Tunnel on Highway 26.

  • The westbound detour for trucks carrying hazardous cargo from Highway 30 is south to I-405, to south on I-5, to west on Highway 217, to west on Highway 26 to NW Cornelius Pass Road.
  • The eastbound detour is the reverse.
    Detour routes for trucks during NW Cornelius Pass Road closure.