I've seen boy scouts up there several times trying to clean things up, and I usually bring a bag and try to pitch in a little too, picking up my trash, and whatever else I can fit in the bag.
As for the place being closed down, its happened before. There use to be a sign that basically said "No shooting, no fishing, no tresspassing" on the railway trestle. At one point there were also some large boulders moved across the road to prevent vehicles from driving in. The land there is mostly in the railroad right-of-way IE the railroad already owns it. I have had Weber and Morgan county sheriffs stop by and just basically check to make sure everyone was being safe, and then drive back out. I've never been asked to leave.
I think the new rumor has something to do with the UHP and Weber/Morgan county Sheriffs cracking down on illegal parking along the freeway between Riverdale and Morgan. There is a notice posted at Sportsmans Wearhouse, and there was an article in the paper a while ago. If you look carefully, all the ladders the DWR installed in the last few years, for fishermen to get over the fence, have been removed along that stretch of freeway.
Basically, the paintballers made a mess along the river and freeway down near Uintah, and the UHP made the decision to just keep everyone out, fishermen paintballers, hunters....
seeing as to how everyone has been parking there illegally since the freeway was built back in the 60's, they are "only enforcing the law".
Supposedly they are going to make and mark "access points" but I havnt seen anything like that yet. There is a grace period until, IIRC, Oct 1st, after that you'll be written a ticket for leaving the freeway for non-emergency reasons.
All in all, its a crappy deal for us fishermen and hunters.