Exit 170 on IH-95 in South Carolina is what I read in the OP
Though a clearer subject line might help.
Lots of post / questions about IH-95 on this forum the past few days as the snowbirds head back toward Pennsylvania, New York and New England.
South Carolina Road Conditions/ Cameras Shows that the overpass construction continues for about another month with one lane closed on the northbound side.
"Emergency Bridge Repair
Emergency bridge repairs have required that SCDOT close the left lane of I-95 north at mile marker 174. Expect delays because of this closure. An alternate route is to take SC 327 , exit 170 to US 76 to US 301 to SC 38 back to I-95 north. This detour route is signed."
So to the OP - looks likely it will be a big slowdown.