Ridgefield Costco Traffic Management Plan

The City has been working closely with Costco on their required traffic management measures to minimize disruptions for residents and businesses during Costco’s opening weekend. This collaborative effort includes the Costco project team, Ridgefield Police, Ridgefield Public Works, Clark-Cowlitz Fire Rescue, Washington State Patrol, and Washington State Department of Transportation.

The Ridgefield Costco Warehouse plans to open on Thursday, August 29 at 8 AM. Two routes will be available between Pioneer Street and Costco: one via N 56th Place and one via N 53rd Place and Pioneer Canyon Drive. A temporary traffic signal at 53rd and Pioneer will be remotely monitored to adjust for real-time conditions and ensure smooth traffic flow.

The traffic management plan includes:

• Certified flaggers to direct and stage traffic.
• Advance warning through temporary signs.
• Continuous monitoring of traffic queues.
• A temporary parking lot for employees and overflow.
• An alternative emergency access point for first responders.

If backups begin to form, flaggers will guide and stage vehicles into the main or overflow lot to keep traffic moving on Pioneer Street.

The multi-agency team will stay in communication throughout the opening weekend to keep traffic moving and minimize delays. The highest traffic volumes are expected on Thursday evening and Saturday around noon. If you’re traveling through on Pioneer Street, consider taking an alternate route during the evening commute on Thursday and Friday.