Portal:U.S. roads/Did you know/May 2019


 * ...that, according to the Michigan Department of Transportation, the first highway centerline in the US (pictured) was painted on the first designation of M-15 in 1917?
 * ... that none of State Highway 32 as it was originally designated through southwestern Oklahoma in 1934 is a part of the current route?
 * ...that speed limits on Guam Highway 1 may differ depending on which side of the road you are on?
 * ...that in the 1950s, four service plazas on the Garden State Parkway had uniformed female employees known as the "Park-ettes" whose duties included providing directions and other information to motorists as well as rendering odd bits of service such as sewing a missing button on a patron's coat?
 * ...that California State Route 174, which includes a historic 1924 bridge, was not designated a State Scenic Highway due to opposition by residents concerned about their property rights?