For me it is most definitely the southernmost few miles of I-77 in the Columbia, SC area, heading southbound. At Exits 6 and 5, there is lots of traffic merging on heading south since this area has a lot of warehouses, light industry, and a couple of truck stops, and it leads to the southernmost crossing over the Congaree River in the immediate Columbia area. Then as you’re approaching the Congaree River, you’re passing by Columbia’s municipal waste water treatment plant. Crossing the river itself is fine, as that bridge has decent concrete, which very well may have been rehabbed before I moved to the area. But the same can’t be said for the two river overflow crossings after the actual river crossing! They are frequently pothole-riddled in the center and right lanes (both directions!), and often the potholes go all the way through! All SCDOT does most times is throw some cold patch in the craters, and occasionally they’ll try to fix it right with concrete, but it never lasts and it’s back to a moonscape maybe a month or so later. These bridges desperately need a full depth deck rehab, much like how NC preserves their bridges, and many other bridges along I-77 in SC need this too, but I digress. As I’m going over those two bridges, always in the left lane to avoid the potholes, and always really fast as I’m generally being pursued by “Big Altima Energy” or the like, I have to try to get back over three lanes to the right so I don’t miss my exit, which is Exit 1 to US 21/176/321.
So yeah, I very much prefer coming home via I-26 in either direction.