State Road 852 (SR 852), locally known as County Line Road and North 215th Street, is a 2.534-mile-long (4.078 km) east-west four lane divided highway straddling the boundary between Broward and Miami-Dade counties in Florida.

The western terminus is an intersection with SR 817 (West 27th Avenue in Miami-Dade County, University Drive in Broward); the eastern terminus is an intersection with U.S. Route 441 (US 441) / SR 7 in Broward County, Northwest 2nd Avenue in Miami-Dade.

The state road designation is omitted on many maps, but the street itself is signed by the Florida Department of Transportation.

The westernmost mile of SR 852 is wedged between the property line of Calder Race Track and an embankment atop which the Turnpike extension is constructed.

East of the Turnpike interchange, County Line Road passes through a residential area and near the eastern terminus, passes by a collection of television and radio transmission towers.