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South Carolina Highway 642

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South Carolina Highway 642 marker
South Carolina Highway 642
Dorchester Road
Route information
Maintained by SCDOT
Length19.292 mi[1][2] (31.047 km)
Existed1939[citation needed]–present
Major junctions
West end
US 17 Alt. near Summerville
Major intersections
East end US 52 / US 78 in North Charleston
Location
CountryUnited States
StateSouth Carolina
CountiesDorchester, Charleston
Highway system
SC 641 SC 651

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.

Route description

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SR 642 runs for 19.3 miles (31.1 km) from U.S. Route 17 Alternate (US 17 Alt.) southwest of Summerville to US 52/US 78 in North Charleston.[3] Dorchester Road is a heavily congested highway during morning and evening traffic periods.[citation needed]

History

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Current plans call for widening of the road from Summerville to US 17 Alternate. This has been completed.[4]

Major intersections

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CountyLocationmi[1][2]kmDestinationsNotes
Dorchester0.0000.000
US 17 Alt. (US 17 Alt. Truck begins) – Walterboro, Bamberg, Summerville
Western end of US 17 Alt. Truck concurrency; western terminus of SC 642; southern terminus of US 17 Alt. Truck
2.8324.558 SC 165 (Bacons Bridge Road / US 17 Alt. Truck north) – Summerville, CharlestonEastern end of US 17 Alt. Truck concurrency
CharlestonNorth Charleston16.542–
16.602
26.622–
26.718
I-526 (Mark Clark Expressway) – Mt. Pleasant, Savannah, GAI-526 exit 15
18.60229.937 I-26 – Columbia, CharlestonI-26 exit 215
19.29231.047 US 52 / US 78 (Rivers Avenue)Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

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References

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  1. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved December 29, 2020.
  2. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved December 29, 2020.
  3. ^ "South Carolina Highway 642" (Map). Google Maps. Retrieved August 29, 2014.
  4. ^ "Project #3 Dorchester Road Improvements" (Press release). Dorchester County Penny Sales Tax Transportation Authority. Retrieved August 3, 2013.
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