PennDOT blew up most of the marine zone while widening the cut a while back. There are occasionally chunks of marine zone that have fallen that people can search, but chunks of the plant layer are much more common to find.
I was there about a month ago to make sure the site was not blown up…again. I only spent about 15 or so minutes there, and didn’t see any marine chunks, but there were quite a few giant slabs of Mahoning shale to look through. The plant slab in the picture was laying out in the open, so everyone is at least guaranteed plant fossils.
The little path to the cut is always beaten down with footprints, and there are always little piles of worked through shale, so there are others that go there! Maybe someone else who visits the site will also post here.