Previous US 501 ALT's:
1947 ROUTE LOG
US 501, SC 503: 0 - 0
US 17: 0.35 - 0.35
1947 ROUTE LOG
US 76: 0 - 0
US 501: 1.0 - 1.0
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US 501 ALT #1: Appeared in April 1937 (SCDOT) as a new BELT routing on Broadway Ave between US 501/SC 503 Main St and US 17.
In 1947, US 501 ALT was downgraded to S-26-15.
US 501 ALT was erroneously shown as SC 501 ALT on the Horry County map.
US 501 ALT #2: Appeared by 1940 as a cutoff between US 501 (now 501 Bus) and US 76 in Marion.
In 1947, US 501 ALT was downgraded to S-34-42. Today the portion of Jones Ave west of Walnut is part of SC 41 ALT while Supply Rd over to US 76 remains S-34-42.
US 501 ALT in Myrtle Beach
1940 Horry County
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US 501 ALT in Marion
1943 Marion County
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