List of Interstate Highways in South Carolina

Interstate Highways of South Carolina
Highway shields for Interstate 85, Interstate 20 Business Spur, and Interstate 526
System information
Maintained by SCDOT
Length:	862.60 mi (1,388.22 km)
Formed:	June 29, 1956 (1956-06-29)^[1]
Highway names
Interstates:	Interstate nn (I-nn)
Business Loop:	Interstate nn Business Loop (I-nn Bus.)
Business Spur:	Interstate nn Business Spur (I-nn Bus.)
System links
South Carolina Highways Interstate U.S. State Scenic

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]

Primary Interstates

Number	Length (mi)^[3]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
I0020 !I-20	141.51	227.74	I-20 at the GA state line	I-95/I-20 Bus. in Florence	1964	current
I0026 !I-26	220.95	355.58	I-26 at the NC state line	US 17 in Charleston	1960	current
Future0073 !Future I-73	—	—	US 17 in Briarcliffe Acres	Future I-73 at the NC state line	proposed	—	Future designated along SC 22.
Future0074 !Future I-74	—	—	US 17 in Garden City	Future I-74 at the NC state line	proposed	—	Future designated along SC 31.
I0077 !I-77	91.05	146.53	I-26 in Cayce	I-77/US 21 at the NC state line	1975	current
I0085 !I-85	106.28	171.04	I-85 at the GA state line	I-85 at the NC state line	1959	current
I0095 !I-95	198.76	319.87	I-95 at the GA state line	I-95 at the NC state line	1968	current
Future

Auxiliary Interstates

Number	Length (mi)^[4]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
I0126 !I-126	3.68	5.92	I-26/US 76 in Columbia	US 21/US 76/US 176/US 321 in Columbia	1961	current
I0185 !I-185	17.70	28.49	I-385 in Mauldin	US 29 in Greenville	1961	current	Toll road between I-385 and I-85.
I0326 !I-326	5.24	8.43	I-26 in Cayce	SC 48 in Columbia	1976	1995^[5]	Was an unsigned designated route, replaced by I-77.
I0385 !I-385	42.16	67.85	I-26 near Clinton	US 276 in Greenville	1962	current
I0520 !I-520	7.20	11.59	I-520 at the GA state line	I-20 in North Augusta	2004	current
I0526 !I-526	19.26	31.00	US 17/SC 7 in Charleston	I-526 Bus./US 17 in Mount Pleasant	1989	current
I0585 !I-585	2.25	3.62	US 176/US 221/SC 9 in Spartanburg	I-85 Bus./US 76 near Spartanburg	1959	current
Former

Business Routes

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
BS0020 !I-20 Bus.	2.00	3.22	I-20/I-95 in Florence	US 76 in Florence	1970	current	Boulevard grade business spur.
BL0085 !I-85 Bus.	8.0	12.9	I-85 near Wellford	I-85 near Spartanburg	1995	current	Freeway grade business loop.
BS0126 !I-126 Bus.	0.60	0.97	I-126/US 21/US 76/US 176/US 321 in Columbia	US 21/US 76/US 176/US 321 in Columbia	1980	—	Was a boulevard grade business spur.
BS0385 !I-385 Bus.	0.70	1.13	I-385/US 276 in Greenville	US 29 in Greenville	1962	current	Unsigned boulevard grade business spur.
BS0526 !I-526 Bus.	1.80	2.90	I-526/US 17 in Mount Pleasant	SC 703 in Mount Pleasant	1992	current	Boulevard grade business spur.
BS0585 !I-585 Bus.	1.60	2.57	US 29/US 176/SC 9 in Spartanburg	I-585/US 176/US 221/SC 9 in Spartanburg	1959	—	Was a boulevard grade business spur.
Former

References

↑ Weingroff, Richard F. (Summer 1996). "Federal-Aid Highway Act of 1956, Creating the Interstate System". Public Roads (Washington, DC: Federal Highway Administration) 60 (1). ISSN 0033-3735. Retrieved March 16, 2012.
↑ "Federal Highway Administration (FHWA) Route Log and Finder List: Table 3 - Interstate Routes". FHWA. Retrieved March 10, 2014.
↑ "Federal Highway Administration (FHWA) Route Log and Finder List: Table 1 - Main Routes". FHWA. Retrieved March 10, 2014.
↑ "Federal Highway Administration (FHWA) Route Log and Finder List: Table 2 - Auxiliary Routes". FHWA. Retrieved March 10, 2014.
↑ "AASHTO Route Numbering Committee Agenda (1995-04-22)" (PDF). North Carolina Department of Transportation. July 28, 1995. Retrieved May 19, 2013.

External links

Media related to Interstate Highways in South Carolina at Wikimedia Commons
Interstate Guide

State of South Carolina

Columbia (capital)

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