Portal:U.S. roads/Did you know/February 2017

...that the Kirkwood Highway portion of Delaware Route 2 was constructed as a divided highway in the late 1930s and early 1940s to provide access to Delaware Park Racetrack?
... that M-154 is one of three state highways in Michigan on an island?
.... that Arizona State Route 51, formerly known as the Squaw Peak Freeway—a derogatory term for Native American women—was renamed the Piestewa freeway after Lori Piestewa, the first Native American woman to die in combat while serving the U.S. Military?
... that Interstate 990 in New York is the highest numbered Interstate in actual use?
... the highest road in the Nevada state route system is Nevada State Route 431 over Mount Rose Summit [elevation 8,911 feet (2,716 m)]?