The clip clara Part 2 from Back to the Future Part III (1990) with Michael J. Fox, Christopher Lloyd
there is no bridge.
Well, Doc, we can scratch that idea.
We can't wait for this thing to get finished.
Marty, it's perfect.
You're not thinking fourth dimensionally.
Right. I have a problem with that.
Don't you see? The bridge will exist in 1985.
It's safe and still in use.
As long as we get the DeLorean up to 88 mph...
before we hit the edge of the ravine...
we'll instantaneously arrive at a point in time where the bridge is completed.