List of Interstate Highways in South Carolina

Last updated

Interstate Highways of South Carolina
I-26 (SC).svg
I-385 (SC).svg
Business Spur 20.svg
Highway shields for I-26, I-385, and I-20 Bus. Spur
List of Interstate Highways in South Carolina
Interstate Highways highlighted in red; future sections in blue; unbuilt sections in orange
System information
Maintained by SCDOT
Length862.60 mi (1,388.22 km)
FormedJune 29, 1956 (1956-06-29) [1]
Highway names
Interstates Interstate XX (I-XX)
Business Loop:Interstate XX Business Loop (I-XX Bus.)
Business Spur:Interstate XX Business Spur (I-XX Bus.)
System links

There are 11  Interstate Highways—5 primary and 6 auxiliary—that exist entirely or partially in the U.S. state of South Carolina. As of December 31, 2013, the state had a total of 850.80 miles (1,369.23 km) of interstate and 11.80 miles (18.99 km) of interstate business, all maintained by the South Carolina Department of Transportation (SCDOT). [2]

Contents

Primary Interstates

NumberLength (mi) [3] Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
I-20.svg I-20 141.51227.74 I-20 at the GA state line I-95 / I-20 Bus. in Florence 01964-01-011964current
I-26.svg I-26 220.95355.58 I-26 at the NC state line US 17 in Charleston 01960-01-011960current
I-73.svg I-73 —— US 17 in Briarcliffe Acres Future I-73 at the NC state lineproposed—Future designation along SC 22
I-74.svg I-74 —— Future I-74 at the NC state line US 17 in Garden City proposed—Future designation along SC 31
I-77.svg I-77 91.05146.53 I-26 in Cayce I-77 / US 21 at the NC state line01975-01-011975current
I-85.svg I-85 106.28171.04 I-85 at the GA state line I-85 at the NC state line01959-01-011959current
I-95.svg I-95 198.76319.87 I-95 at the GA state line I-95 at the NC state line01968-01-011968current

Auxiliary Interstates

NumberLength (mi) [4] Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
I-126.svg I-126 3.6805.922 I-26 / US 76 in Columbia US 21 / US 76 / US 176 / US 321 in Columbia 01961-01-011961current
I-185.svg I-185 17.728.5 I-385 in Mauldin US 29 in Greenville 01961-01-011961current Toll road between I-385 and I-85.
I-326.svg I-326 5.248.43 I-26 in Cayce SC 48 in Columbia 01976-01-01197601995-01-011995 [5] Was an unsigned designated route, replaced by I-77.
I-385.svg I-385 42.1667.85 I-26 near Clinton US 276 in Greenville 01962-01-011962current
I-520.svg I-520 7.7212.42 I-520 at the GA state line I-20 in North Augusta 02004-01-012004current
I-526.svg I-526 19.2631.00 US 17 / SC 7 in Charleston I-526 Bus. / US 17 in Mount Pleasant 01989-01-011989current
I-585.svg I-585 2.253.62 US 176 / US 221 / SC 9 in Spartanburg I-85 Bus. / US 176 near Spartanburg 01959-01-011959current
  •       Former
  •       Proposed and unbuilt

Business routes

NumberLength (mi)Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
Business Spur 20.svg I-20 BS 2.1103.396 I-20 / I-95 in Florence US 76 Conn. / West Evans Street in Florence 01970-01-011970current
Business Loop 85.svg I-85 BL 8.77014.114 I-85 northwest of Fairforest I-85 east of Valley Falls 01995-01-011995current Freeway-grade business loop
Business Spur 126.svg I-126 BS 0.600.97 I-126 / US 21 / US 76 / US 176 / US 321 in Columbia US 21 / US 76 / US 176 / US 321 in Columbia 01980-01-011980—
Business Spur 385.svg I-385 BS 0.4900.789 I-385 / US 276 in Greenville US 29 / SC 183 in Greenville 01962-01-011962currentUnsigned business spur
Business Spur 526.svg I-526 BS 1.5702.527 I-526 / US 17 in Mount Pleasant SC 703 in Mount Pleasant 01992-01-011992current
Business Spur 585.svg I-585 BS 1.602.57 US 29 / US 176 / SC 9 in Spartanburg I-585 / US 176 / US 221 / SC 9 in Spartanburg 01959-01-011959—
  •       Former

See also

References

  1. ↑ Weingroff, Richard F. (Summer 1996). "Federal-Aid Highway Act of 1956, Creating the Interstate System". Public Roads. Vol. 60, no. 1. Washington, DC: Federal Highway Administration. ISSN   0033-3735. Archived from the original on September 23, 2021. Retrieved March 16, 2012.
  2. ↑ Starks, Edward (January 27, 2022). "Table 3: Interstate Routes in Each of the 50 States, District of Columbia, and Puerto Rico". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved January 23, 2023.
  3. ↑ Starks, Edward (January 27, 2022). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2021". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved January 23, 2023.
  4. ↑ Starks, Edward (January 27, 2022). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of December 31, 2021". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved January 23, 2023.
  5. ↑ Special Committee on U.S. Route Numbering (April 23, 1995). "Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on October 16, 2017. Retrieved May 19, 2013.
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