York County drivers should brace for a new traffic pattern on SC Highway 160 at the I‑77 interchange (Exit 85) starting this week, as crews move into a key phase of the multi‑year interchange‑modernization project. Work begins Wednesday evening and runs overnight from 7 p.m. to 6 a.m. each night through Sunday to limit disruption to daytime rush hours and local businesses.
What’s Changing on SC‑160
- The shifts are part of the SC 160/I‑77 Interchange Reconfiguration project, which is rebuilding the ramp system as an Offset Directional Interchange (ODI)—the first of its kind in South Carolina—and widening SC‑160 to six lanes between Pleasant Road and US‑21.
- Over the work week, motorists will see lane shifts and temporary closures in both the eastbound and westbound directions of SC‑160 at the interchange, with crews guiding traffic onto newly built bridge sections and adjusted lanes.
Helping Drivers Adjust
- The South Carolina Department of Transportation has positioned digital message boards in the work zone so drivers can see real‑time updates on which lanes are closed and where to expect slowdowns.
- Local authorities are urging extra caution during the overnight window, since workers, heavy equipment, and partial lane closures will be very close to moving traffic, and the interchange is one of the county’s busiest corridors.
For people commuting between Fort Mill, Tega Cay, and points north or south along I‑77, the temporary annoyances are part of a long‑term push to cut congestion, reduce conflict‑points at the ramps, and make the whole interchange safer as York County keeps growing.
