Interstate 520 (I-520) is a 23.34-mile (37.56 km) auxiliary Interstate Highway that encircles most of Augusta, Georgia, and North Augusta, South Carolina, as a three-quarter beltway around the western, southern, and eastern parts of the main part of the Augusta metropolitan area. It begins at I-20 and State Route 232 (SR 232) in the northern part of Augusta, Georgia, and ends at I-20 in the northern part of North Augusta, South Carolina. I-520 is also known as Bobby Jones Expressway and the Deputy James D. Paugh Memorial Highway in Georgia and Palmetto Parkway in South Carolina. On the Georgia side, the road also carries the internal designation State Route 415 (SR 415).