This is based on 1/2 the bridge from the end of the movie. I built it for a Brickarms contest but did not enter in time, so here it is. Indy is about to slash the ropes. Everyone else important is on the 1/2 I didn't build.
These are the cliffs, with the croc eating a guy(the cape).
Cutting the rope. The baddie's bandoliers are made of black rubber bands from some set.