I-73
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From: Myrtle Beach (Horry County)
To: North Carolina State Line above Bennettsville (Marlboro County)
Nationally, I-73 will realistically run from Myrtle Beach to I-81 Roanoke VA.
Total Length: 23.5 miles open but signed as SC 22.  
ROUTE LOG
US 17: 0 - 0
SC 31: 1.7 - 1.7
SC 90: 3.9 - 5.6
SC 905: 4.2 - 9.8
US 701: 10.7 - 20.5
SC 22: 3 - 23.5
Creation: I-73 was born out of the 1991 Intermodal Surface Transportation Equity Act (ISTEA) which authorized an interstate from Charleston SC to Detroit MI.
Adjustments: In 1998, the Transportation Equity Act for the 21st Century (TEA-21) truncated I-73 from Charleston to Georgetown.
South Carolina has been slowly pursuing building the portion from Myrtle Beach northward.
For a thorough history of I-73 in South Carolina up through 2007, here is a compilation by William Lawson as part of Gribblenation.com - I-73 history.
Most of the next several years centered around studying how tolls might get I-73 built sooner (or at all).
In recent months, a route has been settled on and the environmental studies have been completed, with the Army Corps of Engineers granting a permit for I-73 to be built in South Carolina.
I-73 will utilize SC 22 form just east of SC 319 all the way to US 17. Then it will be new freeway construction to the west of Mullins and Latta, meeting I-95 about 3 miles northeast of SC 38. I-73 will then head between Clio and Bennettsville before heading to Hamlet NC.
Design documents show the following Exits are anticipated:
SC 22
S-26-308
SC 917 EB
SC 917 WB
US 76
SC 41 ALT
US 501
I-95
SC 34
SC 381
US 15-401
SC 79


It looks like there will be no direct exits with SC 41, US 301, SC 917 Latta, and SC 9

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Page last modified 8 September 2017