Indiana State Route 104 is a east-west highway in St. Joseph County. This runs between the Norfolk Southern Railroad, to the north, and the CSX railroad, to the south. It goes from Walkerton, west to the La Porte/St. Joseph County Line. IN St Rt 104 passes through the following town in St. Joseph County. Walkerton
IN St Rt 104 is not multi-plexed in St. Joseph County. IN St Rt 104 intersects the following highways in St. Joseph County. U.S. Rt. 6, at Walkerton.
EB IN St Rt 104 at the La Porte/St. Joseph County Line.