Im going between Cincinnati and Columbus several times over the next three weeks and am not looking forward to this even though it seems theyre taking a mostly out of the way route through the SE Ohio farming towns.
If you're going between Cincinnati and Columbus, you should be absolutely nowhere near this route, as it's going nowhere near I-71.
Generally, low overpasses or turns that would be problematically tight.
E: Checking street view, for example: that Mink Rd overpass over I-70 is likely either too narrow or not rated for the weight.
https://www.google.com/maps/@39.9506421,-82.7300744,3a,75y,1...
The Ohio River is famously an easily navigable river; there's only one natural falls along the route from Pittsburgh (the confluence of the Allegheny and the Monongahela rivers) to Cairo (where it joins the Mississippi). It provides the plurality of the water to the Mississippi River, a little less than half of the total discharge. I don't know where you grew up, but the river is more comparable (in European terms) to the Rhine, Danube, Dnieper, Don, or Volga than something like the Thames or the Seine rivers.
Quite likely, there's a fair chance that large items for the power plant (like the steam turbines) were brought in by the river in the first place.
Seems like starting at 8pm would mean less snarl, less traffic to deal with, etc.
Southern states do their work from 8pm-midnight+.
Northern states do it from 9am-5pm.
Also, night time is dark. It makes things much more difficult than it needs to be at the convenience of some drivers in a car. Natural daylight is just so much better than having to have portable lights.
It’s road construction season in Ohio anyway so most drivers are going to face a significant delay along their journey regardless of when this load gets moved.