Portal:U.S. roads/Did you know/October 2018


 * ...that Interstate 580 has portions opened to traffic in the 1960's but was unsigned until 2012?
 * ...that two 4 character Interstate Highway designations have existed, Interstate H-201 and Interstate 180N?
 * ...that Interstate 82 was moved to the northeast side of the Yakima River after the government was sued by the Yakama Nation?
 * ...that Utah officialls originally mocked the route of Interstate 70 as a road to nowhere but it was so routed to appease military planners who wanted a better route between Southern California and Denver, Colorado?
 * ...that to be considered an All-American Road, a road must be deemed to be important enough to be destination unto itself?