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SR 20 North Cascades Highway – Preview of 2022 work – Maintenance and preservation

Rocky Creek to Granite Creek BST

Rocky Creek to Granite Creek BST kicks-off summer 2022. This preservation project extends from milepost 102 at Rocky Creek Road in Rockport, approximately 9 miles east of Concrete to milepost 148 near Granite Creek, approximately 45 west of Winthrop. Contractor crews working on behalf of WSDOT will overlay the road with an aggregate surface treatment that preserves the life of the existing roadway.

Map shows vicinity of preservation project beginning at milepost 102 at Rocky Creek in Rockport and extending to milepost 148 near Granite Creek, about 45 miles west of Winthrop.
SR 20 Rocky Creek to Granite Creek BST

In addition to the surface treatment, crews will make some pavement repairs and apply fog seal.

What should travelers expect

Work zone signs will notify travelers that they are entering an established work zone. A pilot car will direct traffic through some areas of this work zone and flaggers will direct traffic through other areas. Pilot car operation is limited to a 15-minute maximum hold time. Drivers should expect single lane closures, shoulder closures, delayed travel times and are asked to follow a reduced speed limit, all posted signage and directions of traffic control officers.

NWR HMA Crack Seal & Pavement Repair

NWR HMA Crack Seal & Pavement Repair kicks off in June 2022 and spans nine state highways across several counties in the northwest region, including SR 20 between milepost 67 near Fruitdale Road in Sedro-Woolley to milepost 90, east of Van Horn Road in Concrete.

Hot liquid asphalt mix will be used to seal active cracks so that water is kept out of the pavement. This is a cost-effective pavement preservation strategy designed to extend the life of the existing roadway.

Map shows vicinity of HMA crack seal and pavement repair along SR 20 from Fruitdale Road in Sedro Woolley to just east of Van Horn Road in Concrete.
SR 20 NWR HMA Crack Seal & Pavement Repair

What should travelers expect

Traffic will be reduced to a single lane throughout this work zone. Most of the work in this area will be done overnight and a pilot car will direct traffic through some areas of this work zone and flaggers will direct traffic through other areas. Travelers should expect delayed travel times and are asked to follow all posted signage and directions of traffic control officers.