Interstate 526 (South Carolina)
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| Mark Clark Expressway | ||||
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| Route information | ||||
| Maintained by SCDOT | ||||
| Length: | 19.56 mi (31.48 km) | |||
| Existed: | 1989 – present | |||
| Major junctions | ||||
| West end: |
  US 17 / SC 7 in Charleston
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 I-26 in North Charleston  US 52 / US 78 in North Charleston
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| East end: |
 US 17 / I-526 Bus. in Mount Pleasant
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| Location | ||||
| Counties: | Charleston, Berkeley | |||
| Highway system | ||||
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| Location: | Mount Pleasant, South Carolina |
| Length: | 1.60 mi (2.57 km) |
| Existed: | 1992–present |
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Interstate 526 (I-526) is a 19.26-mile (31.00 km) spur route of Interstate 26, which provides a defacto by-pass of US 17 north around Charleston, South Carolina in the United States.
I-526 begins at an incomplete interchange with US 17 (Savannah Highway) and SC 7 (Sam Rittenberg Boulevard) in the West Ashley section of the city of Charleston, just north of the Stono River. The interchange includes a loop ramp from northbound US 17, a ramp from southbound US 17, and a half-diamond interchange with SC 7. The four-lane freeway heads north past the Citadel Mall and meets SC 461 at a partial cloverleaf interchange. SC 461 heads west as Glenn McConnell Parkway and east as Paul Cantrell Boulevard; both directions lead to SC 61 (Ashley River Road). I-526 crosses SC 61 and uses the General William C. Westmoreland Bridge to cross the Ashley River into the city of North Charleston. The freeway has diamond interchanges with Leeds Avenue and SC 642 (Dorchester Road) and crosses over CSX's Charleston Subdivision.
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