City of Sioux Falls Public Works is lining the Sioux River South Sanitary Sewer Interceptor in the area between 41st Street and 57th Street along the bike trail. Construction activity will require the bike trail to be closed along the west side of the Big Sioux River for approximately five days beginning Monday, February 20, at 8 a.m. There will be no through pedestrian or bike traffic allowed on the bike trail between 41st Street and 57th Street on the west side of the river during the closure. Bike trail traffic will be routed to the east side of the river during closures. Route signage will be in place.