[4] State Route 155 begins at a four-way stop intersection in Shawnee where SR 93 forms the southern and western legs.
State Route 155 curves northeast and then starts to bend to the southeast, at which point Main Street converges with the highway.
Departing Shawnee, State Route 155 enters into Salt Lick Township and the Wayne National Forest.
The highway trends generally east-southeast and then east, before reaching the Sulphur Springs Road intersection.
Bending back to the east, State Route 155 passes by Miller Junior and Senior High Schools.
After bending back to the northeast, SR 155 passes amidst more woods and intersects Township Road 331 before entering the village of Corning.