Interstate 17, Arizona
Interstate 17 is a north–south Interstate Highway located entirely within the U.S. state of Arizona. I-17 has the unusual distinction of starting at approximately milepost 194 instead of at milepost zero. This is a holdover from Arizona's old system of marking mileposts, where a branching route would continue the milepost numbering of its original host, instead of starting over at zero.
Interstate 17, Arizona
Interstate 17 is a north–south Interstate Highway located entirely within the U.S. state of Arizona. I-17 has the unusual distinction of starting at approximately milepost 194 instead of at milepost zero. This is a holdover from Arizona's old system of marking mileposts, where a branching route would continue the milepost numbering of its original host, instead of starting over at zero.