U.S. Route 17 Alternate (South Carolina)

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Alt
U.S. Route 17 marker

U.S. Route 17 Alternate
Route information
Alternate route of US 17
Maintained by SCDOT
Length: 123.4 mi[1] (198.6 km)
Existed: 1951 – present
Major junctions
South end: US 17 / US 21 near Pocotaligo
  US 15 in Walterboro
US 78 in Summerville
I‑26 in Summerville
US 176 in Summerville
US 52 in Moncks Corner
US 521 in Sampit
North end: US 17 / US 701 in Georgetown
Highway system

U.S. Route 17 Alternate (US 17 Alt) is an alternate route of U.S. Route 17 in South Carolina that runs between Pocotaligo and Georgetown. It is 123.4 miles (198.6 km) long and has been four-laned in various segments since 1970.

Route description[edit]

US 17 Alt starts at the northern terminus of the US 17-21 overlap near Pocotaligo as a two-lane highway. It heads north along US 21 through Yemassee, where it passes over the CSX Charleston Subdivision and then an over SC 68. Due to the presence of a parallel railroad spur along the north side of SC 68, access to and from US ALT 17-21 is only available from bi-directional on-off ramps on the southwest and southeast corners of the bridge. The multiplex continues until US 21 branches off on its own to the northwest. From here it runs through Hendersonville, and then Walterboro, where it merges with SC 63, becomes the northern terminus of SC 303, and the southern terminus of US 15. From that point, US 17 Alt moves away from I-95, running along the southeast side of Lowcountry Regional Airport and moving further northeast. In Summerville, it intersects US 78, has an interchange with I-26, and intersects US 176. At Moncks Corner, it intersects US 52 and crosses the Dennis Bishop Bridge over the Cooper River. Aftet crossing the W.H. Andrews Memorial Bridge over the Santee River, it joins another multiplex with US 521 in Sampit, and both routes finally terminate at US 17, along with the southern terminus of US 701 in Georgetown.

History[edit]

US 17 Alt was established in 1951 as a renumbering of mainline US 17 from near Pocotaligo to Walterboro, SC 64 from Walterboro to Moncks Corner, SC 179 from Moncks Corner to Jamestown, and SC 528 north of Jamestown to Sampit. US 17 Alt was also overlapped with US 52 in Moncks Corner, SC 41 around Jamestown, and US 521 between Sampit and Georgetown.[2][3][4][5][6][7][8][9][10][11]

The first section to be widen four-lane was in 1970 from US 78 to I-26. This followed with four-lane sections in Georgetown (1974), its concurrency with US 52 in Moncks Corner (1975), and its concurrency with SC 64 in Walterboro (1979). Since the late 1990s, US 17 Alt has been widening slowly into four-lane from I-26 towards Moncks Corner.

A second US 17 Alt did exist in South Carolina from 1955 to 1994, from the Georgia state line to Limehouse. Today it is part of mainline US 17.

Junction list[edit]

County Location Mile[1] km Destinations Notes
Beaufort   0.0 0.0 US 17 / US 21 south (Trask Parkway) – Beaufort, Savannah South end of US 21 overlap
Hampton Yemassee 3.8 6.1 SC 68 west (Connely Street) – Hampton, Allendale
Colleton   7.5 12.1 US 21 north (Low Country Highway) – Smoaks North end of US 21 overlap
Walterboro 22.6 36.4 SC 63 west (Sniders Highway) – Varnville West end of SC 63 overlap
24.0 38.6 SC 303 south (Green Pond Highway) – Green Pond
24.3 39.1 SC 63 east (Hampton Street) – Jacksonboro East end of SC 63 overlap; to USC Salkehatchie
24.5 39.4 US 15 north (Jefferies Boulevard) – St. George
24.7 39.8
SC 64 Bus. west (Paul Street) – St. George, Barnwell
West end of SC 64 Bus overlap
25.4 40.9
SC 64 Bus. east (Padgett Loop) – Jacksonboro, Charleston
East end of SC 64 Bus overlap
26.1 42.0 SC 64 (Robertson Boulevard) – Barnwell, Jacksonboro, Charleston To USC Salkehatchie
Cottageville 35.4 57.0 SC 651 north (Rehoboth Road)
Berkeley The Forks 48.5 78.1 SC 61 north – Ridgeville North end of SC 61 overlap; to Givhans Ferry State Park
48.8 78.5 SC 61 south (Beech Hill Road) – Charleston South end of SC 61 overlap
Slandsville 50.7 81.6 SC 642 south (Dorchester Road) – North Charleston To Charleston AFB
Summerville 57.1 91.9 US 78 (Fifth Street) – Charleston, Ridgeville
57.9 93.2 SC 165 south (Berlin Myers Parkway) – Ravenel
58.6 94.3 I‑26 – Charleston, Columbia I-26 Exits 199 A-B
Goose Creek 62.5 100.6 US 176 – Goose Creek, Charleston, Holly Hill
Moncks Corner 73.1 117.6 SC 6 (Main Street) – Charleston, Holly Hill
74.5 119.9 US 52 south – Charleston South end of US 52 overlap
  76.2 122.6 To SC 402 – Cordesville, Huger
  76.4 123.0 US 52 north – St. Stephen, Kingstree, Florence North end of US 52 overlap
  90.4 145.5 SC 45 north (Santee River Road) – Alvin, St. Stephen North end of SC 45 overlap
Jamestown 94.2 151.6 SC 41 south / SC 45 south – McClellanville, Charleston South end of SC 45/SC 41 overlap
Georgetown   100.0 160.9 SC 41 north – Andrews North end of SC 41 overlap
Sampit 113.8 183.1 US 521 north (Georgetown Highway) – Andrews North end of US 521 overlap
Georgetown 123.2 198.3 US 521 north (Highmarket Highway) – Myrtle Beach, Charleston South end of US 521 overlap
123.4 198.6 US 17 / US 701 north – Pawleys Island, Myrtle Beach, Conway, Charleston
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]

References[edit]

  1. ^ a b Google Inc. "U.S. Route 17 Alternate". Google Maps (Map). Cartography by Google, Inc. https://maps.google.com/maps?saddr=U.S.+17Alternate+N%2FUS-21+N%2FCastle+Hall+Rd%2FState+Rd+S-7-3&daddr=32.8470429,-80.6944922+to:33.0103098,-80.1833517+to:Exchange+St&hl=en&ll=33.068528,-80.062866&spn=1.002371,1.783905&sll=32.826808,-80.649605&sspn=0.251282,0.445976&geocode=FawQ8gEd_0gu-w%3BFcI09QEdJLMw-ykpy7k76q7-iDH5G4bvM0GjzQ%3BFYWy9wEdyX84-ylNrt7ufov-iDGRYZ7-xFNAlA%3BFV5D_QEdwilG-w&mra=dpe&mrsp=1&sz=12&via=1,2&t=p&z=10. Retrieved November 1, 2013.
  2. ^ South Carolina Department of Transportation (1943) (PDF). General Highway Map, Beaufort County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/706/rec/1. Retrieved November 16, 2013.
  3. ^ South Carolina Department of Transportation (1951) (PDF). General Highway Map, Beaufort County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/707/rec/2. Retrieved November 16, 2013.
  4. ^ South Carolina Department of Transportation (1940) (PDF). General Highway Map, Hampton County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/620/rec/1. Retrieved November 16, 2013.
  5. ^ South Carolina Department of Transportation (1951) (PDF). General Highway Map, Hampton County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/174/rec/1. Retrieved November 16, 2013.
  6. ^ South Carolina Department of Transportation (1943) (PDF). General Highway Map, Colleton County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/802/rec/1. Retrieved November 16, 2013.
  7. ^ South Carolina Department of Transportation (1953) (PDF). General Highway Map, Colleton County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/815/rec/2. Retrieved November 16, 2013.
  8. ^ South Carolina Department of Transportation (1940) (PDF). General Highway Map, Berkeley County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/107/rec/1. Retrieved November 16, 2013.
  9. ^ South Carolina Department of Transportation (1952) (PDF). General Highway Map, Berkeley County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/348/rec/3. Retrieved November 16, 2013.
  10. ^ South Carolina Department of Transportation (1943) (PDF). General Highway Map, Georgetown County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/654/rec/2. Retrieved November 16, 2013.
  11. ^ South Carolina Department of Transportation (1953) (PDF). General Highway Map, Georgetown County, South Carolina (Map). Cartography by SCDOT. http://digital.tcl.sc.edu/cdm/singleitem/collection/scrm/id/553/rec/1. Retrieved November 16, 2013.

External links[edit]