I-40 Weather and Radar

I-40 (Interstate 40) sits along the southern half of the United States and runs east to west. Established in 1956, it is about 2,500 miles long and runs through California, Arizona, New Mexico, Texas, Oklahoma, Arkansas, Tennessee, and North Carolina. It is the third longest highway in the nation, after the I-90 and the I-80. 

Some of the major cities along the I-40 route include Flagstaff, Albuquerque, Amarillo, Oklahoma City, Little Rock, Memphis, Knoxville, and many cities in North Carolina. In the west, part of I-40 overlaps the historic Route 66, but the I40 is also great to travel if you’re looking for an Arizona Road Trip that begins in Phoenix and ends in Flagstaff.