Indiana State Route 256 is a east-west highway across Northern Scott County. This connects the City of Austin to Interstate 65 and Madison. IN St Rt 256 passes through the following town in Scott County. Austin IN St Rt 256 is multi-plexed in Scott County. IN St Rt 256 intersects the following highways in Scott County. Interstate 65, near Austin. U.S. Rt. 31, at Austin. Indiana State Route 203, near New Frankfort.