Mechanical Engineers

Some dude with a keyboard says

Of course that WILL happen in the future, to everything, however, we are so far away from that point, that it might not even happen within ours or our children's lifetime.
The problem isn't AI, it's the computers that are available to them. The amount of resources, computing power, and maintenance that a single supercomputer takes, is simply not worth the effort in order to design a more durable bridge/material.
First, we would need to solve the energy and resource crisis.
Then we would need to focus on advancing computer technology enough in order to make it readily available, and sustainable in order to be distributed to research facilities, companies, and universities around the world.
Only AFTER those things have been solved, could computers and AI surpass human engineers.
You're simply relying on the fact that at SOME POINT, this will happen. Of course it will, at some point, we will all die, at some point, the universe will expand into a cold, empty, nothing.
I won't see you soon, in fact, I wish to never meet you. Simply because, you're the type of person to never take an opportunity/exert yourself to make the world better because you think, at some point, we'll all be surpassed by computers and die. So what's the point?