High Quality Content by WIKIPEDIA articles! Interstate 575 (I-575) is an Interstate Highway spur route in the United States, which branches off Interstate 75 in Kennesaw and connects the metro Atlanta area with the north Georgia mountains. I-575 is also the unsigned State Route 417 and is cosigned as SR 5. I-575 begins in northern Cobb County near Kennesaw and goes mostly through Cherokee County, ending at its northern border with Pickens County, where it continues as SR 515. It is officially 31 miles (49.85 km) long, though this extends it past a surface intersection.