Iowa Highway 3

The Iowa Highway 3 is a 328 miles ( = 528 km ) long highway in the U.S. state of Iowa, which runs from east to west.

The highway begins at the South Dakota Highway 50 in Westfield on the border with South Dakota and ends on U.S. Highway 52 on U.S. Highway 61 and on U.S. Highway 151 in Dubuque.