The hole is too big to jump and the bridge is crumbling away under you.

Another legend tells that the designer presented himself at the inauguration riding a horse, ready to flee away in case the bridge had crumbled down.

Roads and bridges are crumbling into disuse.

The bridge was crumbling even more seriously.

The bridge crumbles and debris covers the camera (though Rob is still visible on screen)

The second time, the bridge will crumble away, leaving either water or lava behind.

Our nation's bridges are aging, crumbling and even sometimes falling down.

There are also worries that the bridges, constructed to be lubricated by water, may crumble.

Their attitudes suggested they would wait until the bridge and the highway crumbled and fell away from beneath them, waiting for someone to help them.

The bridge crumbles, we learn to swim the river, the elevator cable snaps, we get in shape by walking the stairs.