COLUMBIA, Mo. (KMIZ) The City of Columbia on Wednesday announced a number of road closures that will occur next week. Beginning on Monday, West Sexton Road will be closed at the intersections of Jefferson Street and McBaine Avenue for a storm water improvement project, according to a release sfrom the city. The closure is expected to last 90 days. The Jefferson Street intersection will be completed first, the release says. The Go COMO Gold Route…