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Originally Posted by Radley77
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It is important to remember that that report was done at a time when there was no money in the kity - at that point, 2006, the West LRT technical report recommended an above ground LRT instead of underground at Westbrook Mall on the west line to save money for example. Before Stelmach's MSI, before Harper doubled the New Deal for Cities and Communities Money. The "not result in efficiency improvements as already reviewed by transportation engineers" was in reference to an at grade system, and the efficiency was for service to the outer burbs, not the city as a whole.
When you read the report you linked to, there are no cost comparisons between an underground route and the Nose Creek Valley line. Heck, there are no cost estimates of the Nose Creek Valley line!
The report sees a problem, transit in communities north of 96th Ave for which the city left after room for exclusive ROW, and proposes the cheapest way to do it. It examines LRT service along Centre St and concludes out of hand that any option but underground (without saying it) would not work. It sees that with no pressure from communities north of 96th Ave, the bus network would continue to provide adequate service south of there.
We have no idea which option is best or not. Not only that, we don't know how much money we would save on rationalized bus services for each option, how much development they would spur, even ridership projections for the two!
Realistically it is around 15 years off before this line is even seriously considered for construction, likely even longer all things considered. Calgary has a long history of doing multiple studies on lines, and considering this was not even a full study, continueing to look at it is fine. For example, to my best recollection, there are West LRT route studies from 77, 83, 88, 2006, and 2008. There is more than enough time for another study before spending big money.