Intermittent lane closures will begin Monday at the Northeast 99th Street and Highway 99 intersection.
Various single-lane closures will take place from 7 a.m. to 7 p.m., and other lanes may close as needed, according to a Clark County news release. Complete and partial road closures for up to 16 days are scheduled to take place in October.
Workers will widen lanes, fill in existing bicycle lane gaps and add a bicycle lane on Northeast 99th Street.
The work is expected to be finished by November. Traffic updates for county roads can be found at www.clark.wa.gov/public-works/highway-99-corridor-improvements or on the county Public Works social media pages.