Are you able to go camping anywhere along the trail to the bridge?

Yes there is.

you can camp just about anywhere except one mile around the bridge, there is a nice campsite 3/4 mile from the beginning of the trail next to the river.

No camping in the private land the bungee company owns. There are some sites by the river and sketchy ones along the road.

Yes you can, in the start of the hike there is a lot of space to camp, but when you go deep in the trail it gets narrow. You can camp anywhere