Illinois Route 185 runs from Taylor Springs east-southeast through Vandalia to Illinois 37 at Farina. The route is entirely within Montgomery and Fayette Counties.
The western start to Illinois 185 is at Illinois 127 at Taylor Springs, just south of Hillsboro.
The western start to Illinois 185 is at Illinois 127 at Taylor Springs, just south of Hillsboro.
In Vandalia, Illinois 185 passes under Interstate 70 without an interchange and joins US Route 40 east...
Still in Vandalia, Illinois 185 and US Route 40 both join US Route 51 south (turn northerly here to access I-70)...
US Route 51 leaves south as the concurrency of US Route 40 and Illinois 185 begins to exit Vandalia to the east...
Several miles east of Vandalia, US Route 40 and Illinois 185 finally split and go their own separate eastward directions...
Illinois 185 has an interchange with Interstate 57 near Farina...
At Farina, Illinois 185 comes to an end at Illinois 37:
