Its eastern terminus is at an intersection with U.S. Highway 218, Iowa Highway 27, and Iowa Highway 58 in Cedar Falls. It currently follows much of U.S. Highway 20's old route from Cedar Falls to Iowa Falls.
The highway's eastern terminus is situated at a critical intersection with U.S. Highway 218, Iowa Highway 27, and Iowa Highway 58 in Cedar Falls. As it stands now, it largely follows the old path of U.S. Highway 20 between Cedar Falls and Iowa Falls.