Indiana State Route 154 runs east-west in Central Sullivan County. This runs from the Illinois/Indiana State Line, at the Wabash River, to Sullivan. It is the only access across the Wabash River into Illinois in Sullivan County. IN St Rt 154 passes through the following towns in Sullivan County. Graysville
Sullivan IN St Rt 154 is not multi-plexed in Sullivan County. IN St Rt 154 intersects the following highways in Sullivan County. Indiana State Route 63, at Graysville.