They are on a bridge. Your genius solution is to throw them off. Brilliant! The eco-nazis will start another protest closing the bridge again to stop it.Yes it is.
Lift the E-brake axle & shove it off the road.
Or just flip it into the ditch.
Surround the driver with armed soldiers, arrest him, take his keys & deliver his load.
Many ways to get it done.
Your other solution is to steal private property at gun point. Jackbooted thuggery is worse than civil disobedience. You folks are unhinged.