Roadway Structures crews from the Seattle Department of Transportation will close one lane at a time on the Northeast 45th Street Viaduct starting next week to repair an expansion joint. They will start on the outside, westbound lane and progress to the opposite side of the roadway. When the eastbound lane is closed, eastbound traffic will be shifted to temporarily use one of the westbound lanes, providing one lane in each direction. The closures will be from 8:30 a.m. to 3 p.m. from August 5 to August 19.