MITCHELL, S.D. (MITCHELLNOW) The South Dakota Department of Transportation will be repairing signs along I-229 in Sioux Falls this week.  Work will affect the northbound lanes between Louise and Western avenues tomorrow from 8 p.m. to 6 a.m.  On Wednesday, the southbound lanes will be closed between Western and Louise avenues from 8 p.m. to 6 a.m.  Look for detour signs to be in place. 7