Some commenters in this article want I-76 capacity into Philly to be expanded. It basically can't be done. I mean, sure, I suppose with infinite money one can do almost anything, but there isn't a realistic way to add lanes or double deck it over a large enough stretch of it for it to be worthwhile.
I imagine some design flaws could be fixed - some curves straightened a bit, for example - but that highway isn't getting any bigger.
