Illinois State Route 251 is a north-south highway in Eastern Marshall County. This runs along the eastside of Interstate 39/U.S. Rt. 51. Portions of the eastern right-of-way are the county line for Marshall and La Salle County. IL St Rt 251 passes through the following towns in Marshall County. Rutland
NB IL St Rt 251 south of Rutland. In Rutland the street signs have yet to be replaced from the re-routeing of U.S. Rt. 51, over ten years prior. NB IL St Rt 251 near the Burlington Northern-Santa Fe Railroad underpass. A junction marker in Wenona. A guide marker at a turn north of Wenona.