Take I-70 West to I-65 North to the West St. exit (114). Go south (left) on West St. to Washington St. Turn west (right) onto Washington St. The Indiana State Museum is on the right. Once on Washington St., the entrance to the underground parking garage is located on the immediate right.
OR
Take I-74 West to Southeastern Ave. (stay on I-74 until it ends and becomes Southeastern Ave.) to Washington St. Turn west (left) onto Washington St. and proceed approximately 10 blocks to the Indiana State Museum. The entrance to the underground parking garage is located on the immediate right after crossing West St.