@3) The 520 bridge will have two additional new lanes, increasing its vehicle capacity. Each new lane, which will be for carpools and transit, can easily accommodate over 1000 more vehicles per hour.
@1 - you should talk to people in Boston. I believe there was even an NPR story about it. During the dig, the city was a huge mess. It went way overbudget and took longer than it was supposed. But now that it's done, everyone loves it. It's been a boon to the city.
How may flying machines and contraptions failed before the Wright brothers got it right? Throughout history, we learn from the mistakes before us, and we work to avoid making the same mistakes in the hopes of avoiding the problems already experienced. It's called learning.
The take-away is not "it was tried, it failed, we should never try it again." The take-away is "they did so many things wrong in this, how do we avoid the same mistakes."
maybe we should have a big tunnel over the pass on I 90. or longer snow sheds. something. our major artery in winter is sorta sucky. also needed, a train line from downtown to snoq. pass ski areas then yakima and spokane. tied into the high speed train line b vancouver and portland. if the train is in a tunnel and we can fit in a couple of car lanes, well that's okay, too.
but in general, the benefit cost ratio on adding highways in already built up areas sucks. that's what history is teaching us, should we care to learn it. the benefit cost ratio of highways on virgin unhighwayed land is SUPER. the ratio after you have them all over and it's built up SUCKS. in general.
@3, my mistake - I thought those two replacement projects together reduced our existing "superhighway" system capacity around town quite nicely. Appreciate the correction.
So cancel the 99 Tunnel.
Now.
How may flying machines and contraptions failed before the Wright brothers got it right? Throughout history, we learn from the mistakes before us, and we work to avoid making the same mistakes in the hopes of avoiding the problems already experienced. It's called learning.
The take-away is not "it was tried, it failed, we should never try it again." The take-away is "they did so many things wrong in this, how do we avoid the same mistakes."
but in general, the benefit cost ratio on adding highways in already built up areas sucks. that's what history is teaching us, should we care to learn it. the benefit cost ratio of highways on virgin unhighwayed land is SUPER. the ratio after you have them all over and it's built up SUCKS. in general.
But that is only if you actually read the technical appendices.