The Loop is a 21.4-mile-long (34.4 km) beltway around Texarkana, TX and Texarkana, AR, which are twin cities in the U.S. states of Arkansas and Texas. Consisting of a section of Interstate 49 (I-49) in Arkansas, and Loop 151 and a section of I-369 and U.S. Route 59 (US 59) in Texas, it forms a three-quarter loop around the east, south and west sides of the city. (I-30 completes the circle on the north side.) The Loop is built to Interstate Highway standards.