Interstate 185 (I-185) is a 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. Route description I-185's northern portion starts at an at-grade intersection at Henrydale Avenue. North of this intersection, US Highway 29 (US 29) continues as Mills Avenue into downtown Greenville. I-185 travels south with two lanes in each direction to its junction with I-85. At this junction, I-185 has only one lane of thru traffic each way; south of the junction, I-185 returns to two lanes in each direction. In addition, US 29 leaves I-185 and travels concurrently with I-85 for . South of exit 12, I-185 has a toll in each direction, with one lane in each direction dedicated for travelers with the Palmetto Pass. At exit 10 (South Carolina Highway 20 [SC 20]), travelers exiting northbound I-185 and entering southbound I-185 also are tolled. At this point, I-185 leaves the Greenville city limits and enters Golden Grove. Just north of exit 7 (US 25), I-185 reenters Greenville. At exit 4 (Fork Shoals Road), travelers exiting southbound I-185 and entering northbound I-185 are tolled. South of this interchange is another toll plaza for both directions, again with one lane in each direction for drivers with the Palmetto Pass. Near the end of I-185's southern terminus at I-385, I-185 enters Mauldin. Exit 1A on I-185 northbound, Neely Ferry Road, allows access to Discovery Island. I-185 then splits; one lane exits rights and merges with I-385 southbound while other traffic continues straight to merge with I-385 northbound. Traffic toward I-385 northbound also can exit on SC 417, an exit with no number. At the merge with I-385 northbound, I-185 shrinks to one lane. I-185 ends here. History The northern portion, which runs from I-85 to the Greenville city limits, was opened in the 1960s and is cosigned with US 29. The southern portion, which connects the I-85/I-185 interchange (exit 42) with the I-385/US 276 interchange (exit 30), was opened as a toll road in 2001. This extension was dubbed the "Southern Connector" and increased I-185 from three to in length. Southern Connector