Indiana State Route 331 runs north-south in Eastern St. Joseph County. It runs from Indiana State Route 23 south to the Marshall/St. Joseph County Line. IN St Rt 331 passes through the following towns in St. Joseph County. Mishawaka Woodland Wyatt IN St Rt 331 is multiplexed in St. Joseph County. U.S. Rt. 20, near Mishawaka. IN St Rt 331 intersects the following highways in St. Joseph County. Indiana State Route 23, near Granger. Interstate 80, near Mishawaka. Interstate 90, near Mishawaka. Indiana East-West Toll Road, near Mishawaka. Indiana State Route 933, at Mishawaka. U.S. Rt. 20, near Mishawaka. U.S. Rt. 20, near Mishawaka.
A guide marker in Mishawaka. A BGS on the WB I-80/90/IN E-W Toll Road. A BGS on WB I-80/90/IN E-W Toll Road. The northern end of IN St Rt 331. The northern end marker.