According to a traveler alert posted by the Washington State Department of Transportation (WSDOT) on its real‑time alerts page, drivers using northbound I‑5 between Cowlitz and Lewis counties should expect an overnight lane closure this weekend to accommodate scheduled median barrier inspections.

WSDOT states that the far left lane of northbound I‑5 will be closed between mileposts 56 and 59, just south of Toledo, from 8 p.m. on Saturday through 5 a.m. on Sunday. The agency notes that travelers may encounter delays during the inspection window, particularly in areas where traffic typically compresses to a single lane.

The affected stretch serves as a key connection for drivers heading north from Castle Rock and Cowlitz County toward Lewis County and the Thurston corridor. Routine inspections of concrete median barriers are part of WSDOT’s ongoing statewide maintenance cycle and are intended to ensure the structural integrity of roadside safety features.

Why this matters

Northbound I‑5 is the primary regional route for weekend travel and freight movement. Even short‑duration closures can create bottlenecks, especially in narrow work zones. Residents traveling from Longview or Kelso toward points north may want to plan for additional time or consider adjusting their departure window during the overnight hours.

Sources

Washington State Department of Transportation: Real‑time traveler alerts
According to reporting by Classic Hits 100.7 KLOG