The Google street view [December 2020] under the bridge appears to show a pair of cross braces entirely missing from one side of the main supports [0] (compared with the other side[1]).

[0] https://www.google.com/maps/@40.4393756,-79.9003658,3a,75y,2...

[1] https://www.google.com/maps/@40.4393756,-79.9003658,3a,75y,8...

Hopefully it won’t get a blur censor like the damaged pylon in the Mexico City Metro viaduct collapse https://news.ycombinator.com/item?id=27046462

Does indeed appear to be the side with the missing braces—the piping seems to match.

Seems confirmed by a follow-up: "Some work was actually done a couple of weeks after I reported it: they removed the rusted beam. Obviously, that wasn't sufficient, though."

https://twitter.com/gpk320/status/1487099756644114435

Great catch. That's crazy.

Wow! you may be right.

Text for anyone who can't access it:

>"@Pgh311 I hope someone is keeping an eye on the underside of the Forbes Avenue bridge over Frick Park? One of the big "X" beams is rusted through entirely (and, yes, I see the cables, so it's probably not a crisis)." -Dr. G Kochanski @gpk320

>"Service Request #307260 has been created. https://qalert.me/GRea13511a408a4282815637644fd5a13a" -Pittsburgh 311 Response Center @Pgh311

The article says

> It was last inspected in September

So hopefully that's been addressed by now?

"Yup, it's still about to fall down. Successfully inspected!"