Roads of the Mid-South & West > Highways of the State of Wisconsin > U.S. Federal Route 51, Wisconsin > U.S. Federal Route 51; Rock County, Wisconsin

U.S. Federal Route 51 Rock County

U.S. Federal Route 51 runs north-south through the center of Rock County. This highway is what Interstate 90, and now I-39/90, by-passed.

---

U.S. Rt. 51 passes htrough the following highways in Rock County.
Beloit

Janesville

Edgerton

---

U.S. Rt. 51 is not multi-plexed in Rock County.

---

U.S. Rt. 51 intersects the following highways in Rock County.
Wisconsin State Route 213, at Beloit.
Wisconsin State Route 81, at Beloit.

Wisconsin State Route 11, at Janesville.

Wisconsin State Route 26, at Janesville.

U.S. Rt. 14, at Janesville.

Wisconsin State Route 59, at Edgarton.

---

NB U.S. Rt. 51 at the Illinois/Wisconsin State Line.

SB U.S. Rt. 51 near Downtown Beloit.

A guide marker in Beloit.

NB U.S. Rt. 51 north of Broad Street.

SB U.S. Rt. 51 in Janesville.

A guide marker on EB U.S. Rt. 14.
Photo from: Paul Dienhart

---

7 April 2026