WSDOT TRAFFIC ADVISORY - Closures of SR 508 no longer in effect

Full closures of SR 508 start Monday, Sept. 20 & extend thru Oct 1

MORTON – Drivers on SR 508 near Mosswood Road (milepost 29.8) will encounter full daytime closures of the highway the next few weeks for an ongoing erosion repair and prevention project.

SR 508 will be fully closed between the hours of 7:30 a.m. and 3 p.m. Monday, Sept. 20 through Friday, Oct 1 while crews use a large crane to set the major pieces of an erosion prevention structure in place.

SR 508 must be closed during this work because the 180-ton crane takes up both lanes of the narrow highway and there is no room for drivers to safely pass through the work zone.

Crews will use the crane to place logs and 22,000-pound boulders every 50 feet underneath SR 508, forming an anchor-boulder structure. The logs are then lashed to the boulders and the structure is filled with smaller boulders to provide a more stable base for the highway.

The anchor-boulder structure also protects the embankment from further erosion by the Tilton River.

SR 508 will be open between the hours of 3 p.m. and 7:30 a.m. Drivers can expect minor delays while an automated signal controls single-lane traffic. The speed limit will be reduced to 25 mph while the signal is in place.

Drivers can use US 12 and SR 122 as an alternate route during closures and construction on SR 508.

For weekly traffic updates in the region, please visit: www.wsdot.wa.gov/Regions/SouthWest/Construction