Indiana State Route 168 runs east-west across Southern Gibson County. IN St Rt 168 passes through the following towns in Gibson County. Owensville Snake Run Mackey IN St Rt 168 is not multi-plexed in Gibson County. IN St Rt 168 intersects the following highway in Gibson County. Indiana State Route 65, at Owensville. U.S. Rt. 41, near Fort Branch.