Quote:
Originally Posted by frinkprof
That's jumping the gun a bit. They basically went back to the drawing board on picking a route alignment south of Harvest Hills. Could be Centre Street, Edmonton Trail, Nose Creek, or maybe somewhere in between.
If Centre Street gets chosen, next is to pick the vertical alignment (elevated, at-grade, underground or some combination), station types and sizes, vehicle technology, etc.
It's all a little ways into the future. However, going underground can be possible while minimizing disruption using a tunnel boring machine:
[snip] [/snip]
There would still be a need for excavations at the station locations, as well as staging areas where the TBM gets put underground and comes out again.
In the case of an elevated alignment, construction impacts could be limited as well. |
Yeah, they could bore in, but cut and cover is cheaper, so I'm guessing that's what they'd do. That is, if we're lucky enough to get the Centre Street alignment.