Indiana State Route 55 runs east-west in Northern Fountain County. It enters Fountain County from Warren County, at the Wabash River, in Attica. Then is runs east to Montgomery County, near Wingate. IN St Rt 55 passes through the following town in Fountain County. Attica
IN St Rt 55 is multi-plexed in Fountain County. U.S. Rt. 41, from the Fountain/Warren County Line to near Rob Roy.