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Originally Posted by Fuzz
But is the cost of burying the red line less than the green, and benefits of that setup? I'm just wondering if this would be cost savings, or just different.
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It should be significantly cheaper, the Green Line tunnel needs to be deeper to go under the Red Line tunnel at MacLeod and (ironically) also under where that 8th Avenue Subway potentially would be.
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Green Line will have two underground stations Downtown/Beltline area. These include:
Eau Claire
7 Avenue S.W.
Connecting these stations will be tunnels that reach depths of around 30 metres below the surface. To safely build these tunnels, two separate approaches will be undertaken: cut and cover and tunnel boring.
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https://www.calgary.ca/green-line/co...-stations.html
And for the short to middle-term, I doubt you even need to build 8th Avenue for the SE LRT. The 7th Avenue at capacity is something from 2014 but ridership growth has not matched projections from then. Changed commute patterns and reduced jobs means that the Transit can run 3-car trains every 5 minutes for the Red Line without overloading them.