Hey San Francisco,
Are you reading this? This foreshadows what’s to come with the ‘new’ Bay Bridge you are building with Chinese steel! Dumb SOBs.
I’ve seen concrete subs who shouldn’t be allowed to play with legos. Usually this sort of collapse is the result of absence of reinforcing in the “reinforced concrete”. Without a complete network of steel, concrete is about as strong as chalk.
good thing we are now importing bridges from China I guess.