Indiana State Route 4 is a east-west highway in Southwestern St. Jospeph County. This runs from U.S. Rt. 31 to the La Porte/St. Joseph County Line. IN St Rt 4 passes through the following town in St. Joseph County. North Liberty
IN St Rt 4 is not multi-plexed in St. Joseph County. IN St Rt 4 intersects the following highways in St. Joseph County. U.S. Rt. 31, near Lakeville.