Work begins Monday from 8 a.m.-4 p.m. on Tilley Road south of 88th Avenue. Work is expected to be completed by next Friday depending on weather.
Work already was delayed a week because of weather conditions and utility conflicts.
The sewer main will extend utility services to the Tilley Road Industrial Park.
Drivers who frequent the area should expect delays and use alternate routes if possible, the release said.
For information, call Tumwater Public Works at email@example.com