Interstate 185 (I-185) is a 17.7-mile (28.5 km) auxiliary Interstate Highway located entirely in Greenville County, South Carolina. I-185 serves as a spur route of I-85 into the city of Greenville as well as a shortcut route for drivers accessing I-385 from northbound I-85. A portion of this road is tolled and is known as the "Southern Connector". Together with a portion of I-385, it forms a partial beltway through Greenville's southern suburbs.