✓Multiple WSDOT road closures and maintenance projects begin Tuesday, Oct. 20, affecting SR 4, SR 411, SR 505, SR 503, and US 12.“004 [1 mi from Longview]: Construction on SR 4 westbound from milepost 58.8 near 32nd Avenue to milepost 60 near Pacific Way will have the right lane closed for gas line work, use caution beginning at 7:34 am on October 20, 2026 until further notice.
Effective: Oct 20, 2026, 7:34 AM
411 [8 mi from Longview]: Construction on SR 411 both directions from milepost 9.39 near Waters Road to milepost 10.4 near Camelot Drive. Crew will be alternating traffic with flaggers for aerial fiber work, use caution and expect delays beginning at 8:16 am on October 20, 2026 until further notice.
Effective: Oct 20, 2026, 8:16 AM
505 [24 mi from Longview]: Maintenance on SR 505 both directions from milepost 1.2 near Winlock (Leave) to milepost 2.2 near N Military Road. Crew will be alternating traffic with flaggers for PUD power line work, use caution and expect delays beginning at 7:52 am on October 20, 2026 until further notice.
Effective: Oct 20, 2026, 10:51 AM
503 [28 mi from Longview]: Maintenance on SR 503 both directions from milepost 21 near 221st Avenue to milepost 20.7 near Chelatchie Creek. Crew will be alternating traffic through one lane, with flaggers for PUD tree trimming, use caution and expect delays beginning at 8:21 am on October 20, 2026 until further notice.
Effective: Oct 20, 2026, 8:21 AM
012 [28 mi from Longview]: From 7:30 p.m. Monday, Aug. 10, and continuing weeknights from 7:30 p.m. to 6 a.m.: Travelers in both directions of US 12 between I-5 (milepost 66.5) and Kennedy Road (milepost 77.4) will take turns moving through one open lane at a time for paving and bridge joint repair work.
Flaggers will direct travelers to follow a pilot car through the work zone. Plan ahead and expect delays of up to 20 minutes in each direction.
Effective: Aug 12, 2026, 12:00 PM
012 [29 mi from Longview]: Monday, Oct. 12 to Sunday, Oct. 20: Travelers in both directions of US 12 will encounter intermittent daytime delays between South Prairie Road (milepost 69.5) and Kennedy Road (milepost 77.1), from 10 a.m. to 6 p.m., for lane striping work.
Travelers should slow down, stay focused and have patience when traveling through the work zone.
Effective: Oct 12, 2026, 5:00 AM
Expected end: Oct 20, 2026, 6:00 PM
004 [38 mi from Longview]: Maintenance on SR 4 both directions at milepost 13 near Raistakka Road. Crew will be alternating traffic with automatic (robo) flaggers for culvert work, use caution and expect delays beginning at 8:27 am on October 20, 2026 until further notice.
Effective: Oct 20, 2026, 8:27 AM
014 [38 mi from Longview]: Maintenance on SR 14 westbound at milepost 0 near Washington Street Onramp will have the grassy shoulders closed for soil sampling work, use caution beginning at 7:23 am on October 20, 2026 until further notice.
Effective: Oct 20, 2026, 7:23 AM”