The circle houses a memorial to General Philip Sheridan who was born in Somerset.

At the eastern village limits, SR 668 splits from US 22 and heads north.

The route then passes a former railroad and makes a sharp turn towards the southeast at Hopewell Township Road 65.

After I-70, the route enters the unincorporated community of Brownsville (within Bowling Green Township).

[2] SR 668 was brought into the state highway system in 1937 on a route longer than it runs today.