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GA STATE LINE: 0 - 0
EXIT 17 - US 1, US 78, US 278: 1.7 - 1.7
EXIT 21 - SC 126: 3.2 - 4.9
EXIT 22 - "To US 25": 1.7 - 6.6
EXIT 23 - I-20 (exit 6): 1.1 - 7.7
Creation: I-520 first appeared on the 2003 official map as under construction. It opened in South Carolina 6/22/04 (SCDOT press release) running just from US 1-78-278 to Georgia.
Adjustments: In Dec 2009 (interstate-guide.com), I-520 was extended to I-20 near its interchange with US 25/SC 121.
Improvements: 4 lane freeway at inception.
Comment: I-520 is an extension of the much older Georgia I-520.
I had wondered if 520 will be renumbered once it made a complete loop with I-20, but there is no indocation this will be occurring.
Official maps showed the first open section as SC 520 for a couple editions, but it has always been posted as I-520. AASHTO approval of I-520 in South Carolina did not technically occur until 2011, so perhaps on paper it really was SC 520...?
US 78 and US 278 are not identified from I-520 for some reason.
I-520 blows off SC 125.
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Page last modified 2 September 2017