The issue here is a series of shipments planned by Exxon that would travel along Hwy 12 from Lewiston, ID, up the wild and scenic Clearwater river, (an epic steelhead fishery) and then up the also wild and scenic Lochsa river, into Montana and continuing up to the tar sands in Alberta.
The loads are huge, almost triple-wide:
And they would travel along a winding, two-lane highway (only at night). Exxon initially had over 200 (yeah, two friggin hundred) of these loads planned, passing through 5 days a week. Currently, they're looking at other options, including reducing the load size to allow them to travel along Hwy 95 and I-90 instead. The reason for the possible change is because of the problems experienced by the two similar loads (shown above) shipped by Connoco/Philips in transit to Billings, MT right now.
Hwy 12 has seemingly hundreds of sportsman's access points, but the agreement made with Connoco/Philips allowed them to close off access to any pullout 24 hours in advance, ostensibly to keep them clear in case the trucks need to pull over to let cars pass, but also to prevent opponents of the shipments (the "nuts") from causing problems.
Camping along the main Clearwater isn't ideal due to the highway, but there are some spots. There are plenty of hotels along 12, in the tows of Orofino, Kamiah, Kooskia, and Lowell. Poppy and the Red Shed are right there in Peck for all your double-handed needs.
The Lochsa is amazing too, with numerous established camping sites and all sorts of informal options. Has some hot springs nearby as well.