Highway 403

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S.C. 403 is a 36.48 mile long highway traveling north from outside Lake City in Williamsburg County to Darlington County south of Hartsville. S.C. 403 passes through Timmonsville midway, where it combines with U.S. 76 for 1.53 miles along Smith Street.

North

S.C. 403 (Cale Yarborough Highway) meets Interstate 95 at a diamond interchange (Exit 150) west of Sparrow Swamp.
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Interstate 95 travels southwest from S.C. 403 to Manning, Santee and Hardeeville in the LowCountry.
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Advancing north from the exchange with Interstate 95, S.C. 403 traverses Deep Hole Swamp.
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Timmons Road (Road 973) ties into S.C. 403 (Cale Yarborough Highway) five miles south of Timmonsville.
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Paralleling Sparrow Swamp, S.C. 403 heads north to converge with U.S. 76 just outside the town of Timmonsville.
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S.C. 403 continues north from U.S. 76 (Smith Street) along Brockington Street through the Timmonsville business district.
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S.C. 403 crosses the Darlington County line in a rural area west of Lake Swamp.
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An erroneous reassurance marker referencing S.C. 403 south instead of north stands just beyond the Florence County line along Oates Highway.
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S.C. 340 (Timmonsville Highway) stems 10.99 miles northeast from S.C. 403 (Oates Highway) to S.C. 34 (Pearl Street) in Darlington.
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S.C. 403 (Oates Highway) crosses U.S. 401 to the northeast of Lamar.
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U.S. 401 (Lamar Highway) north connects S.C. 403 with Interstate 20 nearby at Exit 131.
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S.C. 403 (Oates Highway) spans Interstate 20 across the Henry Clay 'Ray' Norris, Jr. Memorial Bridge. There is no access between the two routes.
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