Of course, one person’s pork is another person’s dinner, so it’s unlikely to stop.
I’m not sure this project would have been viewed quite as favorably as the Big Dig: https://en.m.wikipedia.org/wiki/Gravina_Island_Bridge though there are many who characterize the Big Dig itself as a massive pork barrel project.
In transportation terms the main issue is that you plan something that will be ready after many years, when it will be ready (if it ever will) things have changes and so the once theoretically good infra is now not needed/nor useful anymore...
Like what?
Someone complained that thing was a waste of money when it was built.
If it is transit related, then it is a waste of time.
If it is auto and truck related, then it is not a waste of time.
Transit projects get a lot more “help” to make them viable because the lawsuit folks think that they are more green and for the greater good.
Auto projects (roadways and highways) go through much more scrutiny and evaluation than transit, so you better be sure to have your i’s dotted on these.
Which means there is much more analysis to justify a need for the roadway. Transit items are given as much lee way as possible to make it work.