Williams Dam is rural and a car is essential. The village sits on State Road 450, halfway between Bedford and Shoals in Lawrence County, southern Indiana. From Indianapolis the drive is about 90 minutes — south on State Road 37 to Bedford, then west on 50 to 450. From Louisville, Kentucky it's about the same time north up I-65 and then west.
The nearest commercial airport is Indianapolis International (IND), 90 miles north. There is no public transport, no taxi service worth speaking of, and no rail.