The Iowa Dept. of Transportation’s Sioux City Construction Office reports placement of barrier rail and traffic control will require the closure of the southbound Interstate 29 off-ramp to Floyd Boulevard (exit 147) from 9-a.m. until 3-p.m. Monday, Oct. 19, weather permitting. Motorists traveling in the area are encouraged to use the Nebraska Street off-ramp (exit 147b) during the hours mentioned, on Monday.