U.S. Federal Route 31 is a north-south highway in Berrien County. Much of this highway has been up-graded to a multi-lane controled access highway. From near Berrien Springs to near Millburg is under construction. U.S. Rt. 31 passes through the following town in Berrien County. Scottdale U.S. Rt. 31 is multi-plexed in Berrien County. Interstate 196, from near Benton Harbor to the Berrien/Van Buren County Line.