https://www.amtrak.com/bptunnel
It’s the tunnel Joe would have passed through a thousand times.
I think there’s a Howard Street tunnel that is also an issue.
If the funding ever gets to where its intended, like many state and federally funded endevours it is a boondoggle that drags on for decades with no end in site. a teet that keeps on feeding for decades. How many major construction jobs in the inner cities have you noticed on the way to work that have been in effect for years and never get completed? I know of one that is still going on that was started when I first got the job and is still going on after I had retired after 30 years