SIOUX CITY, Iowa – March 27, 2023 – If you travel on Iowa 175 in Monona County three miles east of Monona County Road L-12 you need to be aware of a construction project that may slow down your trip. The Iowa DOT says beginning at 9 a.m. on Monday, April 3 until July 7, weather permitting, traffic will be reduced to one lane in each direction with a ten-foot lane-width restriction in place as crews work to replace a bridge deck.