South Carolina - Roads & Highways - Interstate Highways Listing

There currently exists a wonderful website that provides very detailed history of each state and U.S. highway for the states of Maryland, West Virginia, Virginia, Tennessee, North Carolina, and South Carolina, plus Washington, DC. Let's all hope it never goes away because this Author does not wish to recreate their incredible and hard work. Kudos to Mapmikey and Adam Prince.

Click Here for an overview of the South Carolina portion. Click on the Interstate Hwy No. below to learn more about each individual highway as provided in that website.

Interstate
Hwy No. 

Miles

From

To

Year Began

Year Ended

Comments

3

-

-

-

-

-
Proposed, never materialized as yet.

20

141

SC/GA State Line

Florence

1967

-
Approved in 1964, the first segment opened in 1967. Extended seven (7) times until completed in 1976. Click Here for wikipedia article.

20 Bus.

2

Florence

Florence

1974

-
From the end of I-20 into downtown Florence.

26

220

SC/NC State Line

Charleston

1960

-
Originated in 1956, the first segment was opened in 1960. Extended in 1961, 1962, 1963, 1964, 1965, 1967, and 1968. Click Here for wikipedia article.

73

-

-

-

-

-
Approved in 1991, this interstate has been in constant battles over routing ever since. Click Here for wikipedia article.

74

-

-

-

-

-
Approved in 1995, this interstate is in a constant battle over funding in South Carolina. Click Here for wikipedia article.

77

91

SC/NC State Line

I-26 near Dixiana

1975

-
Originated in 1956, the first segment was opened in 1975. This highway was completed in 1986. Extended in 1976, 1979, 1980, 1981, 1982, 1988, 1990, and 1995. Click Here for wikipedia article.

77 Temp

-

Columbia

Columbia

1985

1995
Approved in 1985. Decommissioned when I-77 extension was completed in 1995.

85

106

SC/NC State Line

SC/GA State Line

1959

-
Originated in 1956, the first segment was opened in South Carolina in 1959. Extended in 1962, 1964, and 1965. Spartanburg bypass created in 1995. Click Here for wikipedia article.

85 Bus.

7

Spartanburg

Spartanburg

1995

-
A renumbering of I-85 through Spartanburg when bypass completed. Click Here for wikipedia article.

95

199

SC/NC State Line

SC/GA State Line

1969

-
Originated in 1956, but the first segment was not opened in South Carolina until 1969. Extended in 1971, 1972, 1973, 1974, 1975, 1976, and completed in 1978. Click Here for wikipedia article.

99

-

-

-

-

-
Proposed, never materialized.

126

3.7

Columbia

Columbia

1961

-
Approved in 1959 and construction completed in 1961. Duplexed with U.S. 76. Click Here for wikipedia article.

126 Bus.

0.5

Columbia

Columbia

c.1978

c.2000
Decommissioned c.2000. Click Here for wikipedia article.

174

-

-

-

-

-
Proposed North Myrtle Beach connector from planned I-74. Most likely will never be constructed.

185

16

I-385 S. of Mauldin

U.S. 29 W of Greenville

1962

-
Originally planned in 1955, construction completed in 1962. Partially duplexed with U.S. 29. Extended in 2001. Click Here for wikipedia article.

285

-

-

-

-

-
Proposed, but quickly redesignated to I-385 in South Carolina.

326

-

-

-

-

-
Approved in 1976, but never built. In 1995, this proposed highway was designated to be part of I-77.

385

42

Greenville

I-26 N of Clinton

1963

-
Originally planned to be I-285 in 1955, but quickly redesignated to I-385. First segment opened in 1963. Extended in 1964 and completed in 1984. Click Here for wikipedia article.

385 Bus.

0.6

Greenville

Greenville

1970

-
A renumbering of U.S. 276 Business. Click Here for wikipedia article.

520

7.7

SC/GA State Line

North Augusta

2004

-
Opened in Georgia in 1966, extended into South Carolina and opened in 2004. Extended in 2009. Click Here for wikipedia article.

526

23

Mount Pleasant

U.S. 17 W of Charleston

1989

-
Opened as an unnumbered freeway in in 1982. Approved and operational as I-526 in 1989. Click Here for wikipedia article.

526 Bus.

1.8

Mount Pleasant

Mount Pleasant

1992

-
A renumbering of U.S. 17 Business. Click Here for wikipedia article.

585

2.2

I-85 N of Spartanburg

U.S.221 NE of Spartanburg

1962

-
Early planning documents identified this as I-385, but was later changed tgo I-585. Duplexed with U.S. 176. Click Here for wikipedia article.

585 Bus.

0.7

U.S. 221 NE of Spartanburg

U.S. 29 E of Spartanburg

c.1986

Unk
Pine Street between Whitney Road and St. John Street. Click Here for wikipedia article.


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