Indiana State Route 520 is a short north-south highway in Eastern Porter County. It runs between U.S. Rt. 12 and U.S. Rt. 20 in Town of Pines. IN St Rt 520 passes through the following town in Porter County. Town of Pines IN St Rt 520 is not multi-plexed in Porter County. IN St Rt 520 intersects the following highways in Porter County. U.S. Rt. 12, in Town of Pines.