Dorchester Road | ||||
Route information | ||||
Maintained by SCDOT | ||||
Length | 19.292 mi[1][2] (31.047 km) | |||
Existed | 1939[citation needed]–present | |||
Major junctions | ||||
West end | US 17 Alt. near Summerville | |||
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East end | US 52 / US 78 in North Charleston | |||
Location | ||||
Country | United States | |||
State | South Carolina | |||
Counties | Dorchester, Charleston | |||
Highway system | ||||
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South Carolina Highway 642 (SC 642, also known as Dorchester Road), is a 19.292-mile (31.047 km) state highway in the southeastern part of the U.S. state of South Carolina. It travels within the Summerville and North Charleston areas.