Indiana State Route 55 runs north-south along the eastern edge of Newton County. Many smaller towns are connected to IN St Rt 55 via local roads. IN St Rt 55 passes through the following towns. Mount Ayr
IN St Rt 55 is multi-plexed in Newton County. U.S. Rt. 24, near Goodland.
IN St Rt 55 intersects the following highway in Newton County. U.S. Rt. 24, near Goodland.