As part of the ongoing project to improve and expand the Interstate 5/State Route 16 interchange, crews working for the Washington State Department of Transportation (WSDOT) will close city streets and highway facilities during night hours over the next two weeks. The most notable closure will be all lanes of eastbound State Route 16 approaching the Nalley Valley Viaduct. All closures are needed so crews can set concrete bridge girders into place. This new bridge will be used as a temporary detour for eastbound SR 16 traffic while the original Eastbound Nalley Valley Viaduct is demolished and rebuilt.

The closures are planned as follows:

South Tacoma Way | Thurs., July 5 and Fri., July 6 (reducing traffic to one lane in each direction between Pine and Wilkeson Streets from 6 a.m. to 3 p.m.); Thurs., July 12 and Fri., July 13 (reducing traffic to one lane in each direction between Pine and Wilkeson Streets from 10 p.m. to 6 a.m.); and Mon., July 16, Tues., July 17 and Weds., July 18 (closing all lanes between Pine and Wilkeson Streets from 9 p.m. to 4:30 a.m. Detour via South Center Street).

SR 16 | Monday through Friday, July 9-13, and again Mon., July 16 (9 p.m. – close Union Avenue on-ramp to eastbound SR 16; 11 p.m. – close all eastbound SR 16 lanes at Union Avenue. Detour via Union Avenue interchange, South 38th Street and I-5; 4 a.m. – reopen all eastbound SR 16 lanes. (Note: On Saturday, July 14, eastbound SR 16 will reopen at 6 a.m.; and 4:30 a.m. – reopen Union Avenue on-ramp to eastbound SR 16).

South Center Street | Tues., July 10 and Thurs., July 19 (closing all lanes between Pine and Wilkeson Streets from 9 p.m. to 4:30 a.m. Detour via South Tacoma Way); Fri., July 20 (closing all lanes between Pine and Wilkeson Streets from 11 p.m. to 7 a.m. Detour via South Tacoma Way).

To learn more about WSDOT maintenance or construction activities that may impact traffic, click here.