One can wish that the city spent less time and money building new sports stadiums, spent more time and money investing in infrastructure, yet still acknowledge that the political reality on the ground makes doing so hard to near-impossible.
Pretending like this type of infrastructure decline is somehow unique to Pittsburgh, which, at least implicitly, the top level comment does, does a great disservice to actually finding solutions to the problems with that "political reality on the ground" - and not just in Pittsburgh.
I didn't read the OP as saying "nowhere else has infrastructure problems" but "bridges are a particularly acute problem in Pittsburgh for these reasons." I would certainly agree that suggesting this kind of issue is unique to Pittsburgh would be misguided.