Just got off the phone with Sue Hem in Chitina. Two shiny trucks within the last 24 hours lost in the Copper from the sand bars below the bridge.
If you or someone you know insists on fording the braids with your truck to save yourself some work or the cost of a charter ticket, you might recalculate the cost based on the loss of your rig, everything in it, the potential loss of life, and the cost of a tow truck to recover your rig (if you can).
If you still insist that the gravel bar sweep is what you've got to do, at least have somebody tall risk their own neck to wade in front of your truck as you haply (spelling intentional) go merrily along.
Besides that, I doubt everybody downriver will be real happy with your contribution to the river.