Motorists on Interstate 90 in Post Falls can expect lane closures over night on Thursday and Friday as crews begin the next stage of work on a new overpass. One westbound lane will be closed beginning at 8:30 p.m. Thursday and lasting until 5 a.m. Friday, an Idaho Transportation Department news release said. One eastbound lane will be closed at 8:30 p.m. Friday, and lasting until 5 a.m. Saturday morning, the release said. Work on the overpass began late last year and is expected to be finished late this year. The Post Falls Urban Renewal Agency is paying for the $15 million project/SR.