Beginning Wednesday, July 15, until further notice: Up to two lanes of in both directions of I-5 will close weeknights from 6 p.m. to 6 a.m. for paving work. Please check the "What to Expect" section below for detailed closure information.
Project overview
Starting in July 2026, Kerr Contractors Oregon, LLC, will repair and repave two sections in both directions of I-5 in Lewis County: between Koontz Road and the SR 508 interchange and between Chamber Way and Salzer Creek.
Over time, weather and heavy traffic have worn down these two sections of I-5, creating ruts, potholes and uneven pavement. If left unrepaired, the road will continue to deteriorate, leading to safety hazards, costly repairs and possible emergency closures. This work will improve the driving surface, make travel smoother and safer, and help extend the highway’s lifespan.
What to expect
During construction, travelers should expect nighttime single- and double-lane closures, ramp closures, lane shifts and reduced speed limits. When traffic is reduced to a single lane, delays of up to 5 miles are possible. To help reduce delays and improve safety, most work will take place on weeknights from 6 p.m. to 6 a.m., when traffic is lighter. Some weekend nighttime lane closures may also be needed.
Work will take place in both directions of I-5 in the following areas:
- Northern Section of I-5: Mileposts 79.64 to 80.75 (north of Chehalis)
- Southern Section of I-5: Mileposts 69.40 to 71.65 (near Napavine)
Once paving is complete, crews will add new reflective lane markings on all freshly paved travel lanes.
This project covers two sections of I-5 in Lewis County: north of Chehalis between Chamber Way and Salzer Creek (mileposts 79.64 to 80.75), and near Napavine between Koontz Road and state Route 508 (mileposts 69.4 to 71.65).
Last paved in 2010, this section of highway carries about 76,500 vehicles each day, with 23% of those being freight trucks. Over the last 16-years, heavy traffic, aging pavement and seasonal weather have worn down the road, and it needs repaired. Once the work is complete, travelers can expect a smoother, safer and more reliable drive for years to come.