Motorists are being asked to detour around a section of US 70S Bypass for several days while upgrades are being performed on the railroad crossing near Warren County Jail. Lane closures and traffic detours are expected to continue through June 7, unless weather causes delays.“They need at least 56 consecutive hours to work on each side of US 70S, and they wish to allow one day in between working on the two directions of travel,” said TDOT assistant traffic engineer Landon Castleberry. The contractor performing the work is Queen City Railroad Construction from Knoxville.