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| ROUTE LOG |
US 17 ALT: 0 - 0 SC 165: 2.9 - 2.9 Charleston-Dorchester Line: 8.0 - 10.9 I-526 (exit 15): 5.1 - 16.0 I-26 (exit 215): 1.9 - 17.9 US 52, US 78: 0.8 - 18.7
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Creation: SC 642 appeared in 1939 as new primary routing, running from SC 64 (now US 17 ALT) Knightsville north to US 78 Jedburg. This is the only SC 642.
| Adjustments: In 1940, SC 642 was extended northeast to SC 6 (now S-8-5) Pinopolis. In 1942, SC 642 swapped places with SC 611 on its southern end, then was extended as new primary routing southeast to US 52-78. In 1947, SC 642 north was truncated to SC 61 (now SC 165). The old path north to Jedburg and Pinopolis became: S-18-24 to SC 64 (now S-18-22); S-18-22 then S-18-12 to Jedburg (Lotts Crossroads to Jedburg is now S-18-58); S-18-15 to Berkeley Line (now S-18-58); S-8-17 to today's US 176 (now S-8-16); S-8-16 to Pinopolis. In Dec 1950, SC 642 was extended west to its current endpoint at what is now US 17 ALT, replacing some of SC 65 Between 1953-57, SC 642 was removed from S-10-62 W. Montague Ave and S-10-769/770 Dorsey Ave.
Improvements: From 1942 to at least 1952, SC 642 was paved only from US 52-78 to Leeds Ave. The 1950 extension to today's US 17 ALT was paved. In 1956, SC 642 from Leeds Ave to SC 165 was paved. In 1963, SC 642 was multilaned from Meeting St to Dorsey Ave was multilaned (maps since then also show it 4-lane to US 52-78 but this is still 2-lane today). In 1975, SC 642 was multilaned out to S-18-62 Ashley Phosphate Rd. About 1995, SC 642 was multilaned out to S-18-199 Trolley Rd. Around 2012, SC 642 was multilaned to SC 165. In 2014, SC 642 was multilaned to US 17 ALT. Comment: SC 642 Dorchester Rd serves the Charleston AFB. | ||||||||||
Knightsville (Dorchester County)
North Charleston (Charleston County)
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Page last modified 1 May 2015