Ohio State Route 412 is an east-west highway across Eastern Sandusky County. It runs from U.S. Rt. 20/Ohio State Route 19, at Fremont, to Ohio State ROute 101, near York. OH St Rt 412 passes through the following town in Sandusky County. Fremont OH St Rt 412 is not multi-plexed in Sandusky County. OH St Rt 412 crosses the following highways in Sandusky County. U.S. Rt. 20, at Fremont. Ohio State Route 19, at Fremont. Ohio State Route 510, near Clyde. Interstate 80, near Clyde. (NO INTERCHANGE) Interstate 90, near Clyde. (NO INTERCHANGE) Ohio Turnpike, near Clude. (NO INGERCHANGE) Ohio State Route 101, near York.