Originally Posted by mSeattle
Yes. Desire and dream are not the same as financed and under construction.
This one is farther than most. I don't mean it's early in the process. This one has fatal flaws from start to finish. Some elements are plausible, but overall it's not plausible.
We're not going to carve out a superblock for an arena.
People generally don't like turning streets into tunnels.
Parks don't get that much use when you have to climb several flights of stairs to get to them, like from SLU or the CBD. Or when you have to walk down a big hill then back up like from Capitol Hill.
It's would be extremely expensive and difficult to build a platform over I-5. This isn't easy to bridge like the convention center site.
I-5 will need a serious retrofit someday, and the Federal DOT wouldn't allow something like this to get in the way.
We don't have a billion dollars or whatever it would take. We're unlikely to get it. I don't see the public voting for that kind of money without a highly-compelling benefit.
To make it plausible you'd have to go nuclear...move the freeway, then redo the coordidor. This could be doable in reality.
If retrofitting I-5 would be a major disruption and cost billions, which seems plausible, I can imagine an alternative with a tunnel similar to 99 going through Capitol Hill and First Hill to provide a bypass. That would allow I-5 to be retrofitted/rebuilt in the existing corridor with less capacity. In that scenario, it could be far less disruptive and expensive to put a park on top of it.