Portal:U.S. roads/Did you know/May 2012

...that Idaho State Highway 1, U.S. Route 2, U.S. Route 95, Washington State Route 20, and Washington State Route 31 make up the U.S. portion of the International Selkirk Loop (pictured), the only international scenic byway in North America?
...that Ranch to Market Road 187 was the site for filming portions of the 2011 film Seven Days in Utopia?
...that the Gila River Native Americans opposed the naming of Arizona State Route 347 after actor John Wayne because he had appeared in movies where he killed Native Americans?
...that in 1821, the Maryland General Assembly conscripted several banks to fund the construction of a turnpike between Boonsboro and Hagerstown along what is now U.S. Route 40 Alternate between Hagerstown and Frederick?
...that U.S. Route 160 was satirized in a song popularized by C. W. McCall, where he humorously describes an out-of-control truck's descent from Wolf Creek Pass, describing it as "37 miles 'o hell"?