The Iowa Department of Transportation’s Council Bluff construction office reports bridge construction work will require closing U.S. 6 in both directions between Pottawattamie County roads L-52 and L-55 four miles east of Council Bluffs beginning Monday, October 17th, weather permitting.  Motorists will be asked to follow the detour signs during this closure. The bridge and U.S. 6 will be open by Oct. 31.