But, if the insurgents blow up the bridge, there could be this thing:

Would work the same as dropping crates/ammoboxes, so driver has to reverse to the hole in the bridge or river army wants to cross and just press rmb or hold up arrow to deploy it and then press rmb to drop it and it should stop after a second or two (like current ammobags). Could be destroyable and repaired with a wrench or maybe welding torch or something if implemented...
On abrams platform if not mistaken:


