OK, we finally got to find this place. It is NOT clearly signed on the highway. Plus the "Old" Access sign is still up, adding further confusion.
Heading toward Berryville from Eureka, there is a Gravel Turnout on the right, just before you go over the bridge. This is the access.
The access does have a sign, you just can't see it from the road. About a 5 yard carry down steep bank to the river from the parking lot.
Still a vast improvement from the old access.
Hope this helps