Portal:U.S. roads/Did you know/October 2015

... that New York State Route 146B was decommissioned after as little as 17 years after its initial designation?
... that Michigan highway M-97 was simultaneously named both Reid Highway and Groesbeck Highway by different levels of government from 1927 until 1949, the year it was dedicated to Alex Groesbeck?
...that New Mexico State Road 6563 takes its number from the wavelength (6563 Å) used by scientists to locate areas of interest on the Sun?
...that Pennsylvania Route 645 was designated in 1962 in order to provide a route number at the Frystown interchange of I-78/US 22?
...that the original plans for Interstate 359 in Tuscaloosa, Alabama called for no interchanges between the termini at I-59 and 15th Street?