Minuteman Missile National Historic Site is located at three sites along a fifteen mile stretch of Interstate 90 in western South Dakota. The Visitor Center is located immediately north of I-90, exit 131. Launch Control Facility Delta-01 is located one-half mile north of I-90, exit 127. The Delta-09 missile silo is located one mile south of I-90, exit 116.
Use the Interstate exits for wayfinding. Vehicle Navigation Systems and GPS units may provide inaccurate information—sending drivers the wrong way on one-way roads, leading them to dead ends in remote areas, or sending them on roads which are impassable.