It continues north to Deep River where it intersects Iowa 85. After passing through Guernsey, it then intersects Interstate 80, then meets US 6. It overlaps with U.S. 6 going eastward, then turns north near Victor.
The highway extends north from Deep River, intersecting Iowa 85 in the process. After passing through Guernsey, it encounters Interstate 80 and later merges with US 6 as it moves eastward. As it approaches Victor, it makes a turn northward.