I-20
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| ROUTE LOG |
GA STATE LINE: 0 - 0 EXIT 1 - SC 230: 1.3 - 1.3 EXIT 5 - US 25, SC 121: 3.7 - 5.0 EXIT 11 - S-2-144: 6.2 - 11.2 EXIT 18 - SC 19: 6.6 - 17.8 EXIT 22 - US 1: 4.3 - 22.1 EXIT 29 - S-2-49: 7.4 - 29.5 EXIT 33 - SC 39: 3 - 32.5 Lexington-Aiken Line: 4.7 - 37.2 EXIT 39 - US 178: 1.6 - 38.8 EXIT 44 - S-32-44: 5.4 - 44.2 EXIT 51 - S-32-204: 5.8 - 50 EXIT 55 - SC 6: 4 - 54 EXIT 58 - US 1: 2.6 - 56.6 EXIT 61 - US 378: 3.6 - 60.2 EXIT 63 - S-32-273: 2.1 - 62.3 EXIT 64 - I-26 (exit 107), US 76: 0.9 - 63.2 Richland-Lexington Line: 0 - 63.2 EXIT 65 - US 176: 1 - 64.2 EXIT 68 - SC 215: 3.2 - 67.4 EXIT 70 - US 321: 1.4 - 68.8 EXIT 71 - US 21: 1.5 - 70.3 EXIT 72 - SC 555: 1.2 - 71.5 EXIT 73 - SC 277: 0.5 - 72 EXIT 74 - US 1: 1.3 - 73.3 EXIT 76A - I-77 (exit 16): 1.5 - 74.8 EXIT 76B (old exit 76) - S-40-63: 0.5 - 75.3 EXIT 80 - S-40-2033: 4.5 - 79.8 EXIT 82 - S-40-53: 1 - 80.8 Kershaw-Richland Line: 2.8 - 83.6 EXIT 87 - S-28-47: 2.3 - 85.9 EXIT 92 - US 601, SC 12: 4.9 - 90.8 EXIT 98 - US 521: 6.1 - 96.9 EXIT 101 - S-28-329: 3.7 - 100.6 Lee-Kershaw Line: 4.5 - 105.1 EXIT 108 - S-31-31: 1.9 - 107 EXIT 116 - US 15: 8.4 - 115.4 EXIT 120 - SC 341: 3.9 - 119.3 EXIT 123 - S-31-22: 2.6 - 121.9 Darlington-Lee Line: 2.8 - 124.7 EXIT 131 - US 401: 5.2 - 129.9 EXIT 137 - SC 340: 6.5 - 136.4 Florence-Darlington Line: 1.8 - 138.2 EXIT 141 - I-20 Bus, I-95 (exit 160): 2.5 - 140.7
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Creation: I-20 first appeared on the 1964 Official Map. It was shown as under construction from SC 6 Lexington to the Wateree River below Camden.
| Adjustments: By 1967, I-20 was shown as open from the Georgia Line to US 25-SC 121 and from SC 6 to S-40-53 Pontiac. Additional construction shown was from US 25/SC 121 to US 1. All other segments are shown as proposed. In 1968 or 1969, I-20 was opened from Pontiac to US 601. Additonally, I-20 was under construction from US 25 to SC 6 and from US 601 to US 521. In 1970, I-20 was shown under construction from US 521 to I-95. In 1971, I-20 opened between US 25/SC 121 and SC 6. In 1973, I-20 was opened from US 601 to US 521. In 1974, I-20 was opened from US 521 to US 15. In 1975, I-20 was opened from US 15 to US 401. In 1976, the last piece of I-20 opened, from US 401 to I-95. Improvements: 4 lane freeway at inception. I don't believe any 6-lane sections were initially built. I-20 was widened to 6 lanes between US 1 Lexington and I believe I-77, in stages, beginning I think in the late 1980s. I seem to recall big traffic problems in the SC 215 to US 21 stretch when I was in high school (mid 80s). At least one exit was not part of the original lineup: Exit 80 Clemson Rd. (btw. 1986-88) Comment: I-20 serves three major cities in South Carolina - Florence, Columbia, and North Augusta, but only really passes inside northern Columbia. I-20 received its exit numbers in 1976. I-20 blows off SC 191, SC 154, and SC 403. Other than the big cities, I-20 remains a quiet ride through lots of hilly scrub terrain. |
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| ROUTE LOG |
I-20 (exit 141), I-95 (exit 160): 0 - 0 US 76: 2 - 2
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Creation: Bus I-20 SPUR first appeared on the 1968 or 1969 Official Map as under construction.
| Adjustments: The 1970 Official Map shows I-20 Bus SPUR as open. Improvements: 4 lane limited access freeway at inception. Comment: I-20 Spur was not initially posted as a green interstate and I don't know when it was. In fact, the last time I was at the US 76 end it was still normal interstate shields. Also, green 20 has been incorrectly posted as mainline I-20 from one direction on I-95 for many years - photo (thanks to Jeff Morrison). I-20 Bus SPUR serves a mall and has a couple stop lights, but otherwise offers quick access to Florence proper from I-20 |
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Florence (Florence County) 
Florence (Florence County).
