BurlOak
Senior Member
I would probably put the highway 400 south tunnel extension to the Gardiner as a higher priority than the buried Gardiner.
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And you've consistently ignored everyones ararguments as to why this is a bad idea.I've consistently said that construction of a toll expressway tunnel should be combined with construction of a subway line. I've proposed running it south from Eglinton West station and merging with the Gardiner west of Bathurst, where the DRL would swing east to the DVP. I've suggested tunneling under Richmond and Adelaide streets. Sorry, I know some of you are sick of hearing it, but I stand by this proposal, which would reduce surface traffic and add more options for commuters. You end up with more transit riders and fewer drivers because of the tolling and added subway connections, though you also get less congestion and quicker, more direct routes in and out of the city for those times when you're willing to pay the toll for convenience, such as the Friday trip to the cottage. There's a construction savings in combining highway with subway tunneling.
Better idea:Or what about continuing the Allen Expressway south of Eglinton underground as a toll tunnel to connect with the Gardiner?
I've consistently said that construction of a toll expressway tunnel should be combined with construction of a subway line. I've proposed running it south from Eglinton West station and merging with the Gardiner west of Bathurst, where the DRL would swing east to the DVP. I've suggested tunneling under Richmond and Adelaide streets. Sorry, I know some of you are sick of hearing it, but I stand by this proposal, which would reduce surface traffic and add more options for commuters. You end up with more transit riders and fewer drivers because of the tolling and added subway connections, though you also get less congestion and quicker, more direct routes in and out of the city for those times when you're willing to pay the toll for convenience, such as the Friday trip to the cottage. There's a construction savings in combining highway with subway tunneling.
Having spent the first 7 years of my career designing tunnel boring machines, including those for TYSSE and Crosstown, as much as I love tunnels, the challenges just wouldn't make it a viable business case, even as a tolled asset where a developer could reap the tolls. The scale of tunnel you're contemplating is on the order of this, or 14m to 17m tunnel OD, which means a bore up to 18m. You're dealing with about 17m of right of way for Richmond, so you're within feet of foundation piles, which is unacceptable.
And lastly, the ramps need to bored as well, but must also follow minimum grading....that means they'll take up a LOT of horizontal space along their length as they go up through the utility-heavy zone below the streets. The scale of utility locates would be enormous.
My pipe dream for awhile was a bored gardiner near its current alignment, but even that was an extravagantly costed fantasy. Now that I work in management consulting related to capital projects, I can see that the investment will never make it feasible, especially with so many other priorities to fund.
I'm going to cross-post my response a couple months back in the DRL thread...I liked what I said!
Euphoria will ignore this post, and continue to insist that Toronto should bury the Gardiner, but is too small minded and cheap to do it. It's the same post over and over.I also like what you said . If only Euphoria would listen.