U.S. Route 16A The route passes through Keystone, South Dakota; Mount Rushmore National Memorial; The Norbeck Wildlife Management Area and Black Elk Wilderness within the Black Hills National Forest; and Custer State Park (including State Game Lodge and Legion Lake); before rejoining the parent highway. US 16A is famous for its scenic, one-lane tunnels aligned to frame the faces on Mount Rushmore, its "pigtail bridges", and its sections of divided highway but with single (and narrow) lanes on each roadway. It is the only route which can be used to drive through Custer State Park without having to pay an entrance fee for
Washington State Route 206 Washington State Route 206 State Route 206 (SR 206, named the Mount Spokane Park Drive) is a state highway serving Mount Spokane State Park in the U.S. state of Washington. Beginning at U.S. Route 2 (US 2) north of Mead, the highway travels east through unincorporated Spokane County and northeast into the Selkirk Mountains, ending at the entrance to Mount Spokane State Park. The roadway, first constructed in the 1890s and reconstructed several times, was designated as SR 206 during the 1964 highway renumbering. SR 206 begins as Mount Spokane Park Drive at an intersection with US 2 north of