South Carolina Highway 642

SC Highway 642 marker

SC Highway 642
Dorchester Road
Route information
Maintained by SCDOT
Length: 19.3 mi[1] (31.1 km)
Existed: 1939 – present
Major junctions
West end:
US 17 Alt. near Summerville
  I-526 in North Charleston
I-26 in North Charleston
East end: US 52 / US 78 in North Charleston
Location
Counties: Charleston, Dorchester
Highway system
  • South Carolina Highways

South Carolina Highway 642 (SC 642, also known as Dorchester Road), is a 19.3-mile-long (31.1 km) state highway in the southeastern part of the U.S. state of South Carolina. It travels within the North Charleston and Summerville areas.

Route description

SR 642 runs for 19.3 miles (31.1 km) from US 17 Alternate southwest of Summerville to US 52/US 78 in North Charleston. Dorchester Road is a heavily congested highway during morning and evening traffic periods. In Summerville, it narrows to a two lane road, creating a bottleneck of traffic in Dorchester County.

History

Current plans call for widening of the road from Summerville to US 17 Alternate.[2]

Major Intersections

CountyLocationmi[1]kmDestinationsNotes
Dorchester0.00.0
US 17 Alt. Walterboro, Bamberg, Summerville
2.94.7 SC 165 (Bacons Bridge Road) Summerville, Charleston
CharlestonNorth Charleston16.6–
16.7
26.7–
26.9
I-526 (Mark Clark Expressway) Mt. Pleasant, Savannah, GAExit 15 (I-526)
18.6–
18.7
29.9–
30.1
I-26 Columbia, CharlestonExit 215 (I-26)
19.331.1 US 52 / US 78 (Rivers Avenue)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. 1 2 Google (August 29, 2014). "South Carolina Highway 642" (Map). Google Maps. Google. Retrieved August 29, 2014.
  2. "Project #3 Dorchester Road Improvements" (HTML) (Press release). [Dorchester County Penny Sales Tax Transportation Authority. Retrieved August 3, 2013.
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