Spurs, Bypasses and Beltways: Alabama and Arkansas

English: Interstate 359 south at Interstates 20/59 in Tuscaloosa, Alabama. (Photo credit: Wikipedia)

Alabama has four auxiliary highways. Two are for Interstate 59 and two are for Interstate 65. In Tuscaloosa Interstate 359 leaves Interstates 20 and 59 at Exit 71. This road runs north for 2.3 miles. The next interstate is Interstate 459 which is located east of Birmingham. This highway leaves Interstate 59 at Exit 137 and travels southwest for 32 miles. It joins Interstates 20 and 59 at Exit 106.

The first auxiliary for Interstate 65 is in Mobile. Interstate 165 travels for just under five miles from I-65 at Whistler to just short of I-10. Interstate 565 journeys for 34 miles from Interstate 65 outside Decatur to east of Huntsville.

Arkansas also has five auxiliary interstates. Three are for Interstate 30 and two are for Interstate 40. Interstate 430 travels on the western side of Little Rock for just under 13 miles. It joins Interstate 40 at Exit 147 to Interstate 30 at Exit 129. Joining Little Rock to Pine Bluff is Interstate 530, which has a length of almost 47 miles. These two auxiliary interstates are joined by another highway. Interstate 630 is an east-west road of 7.4 miles that connects those two north-south interstates.

With a length of almost ten miles, Interstate 440 leaves Interstate 40 outside Little Rock at Exit 159 and travels to I-530 at Exit 138. Finally, Interstate 540 begins near Rogers in the northwestern corner of the state and travels south through Fort Smith for almost 81 miles. Near the Oklahoma state line, this road loses its interstate status.