Quote:
Originally Posted by jsbertram
That jogs my recollection that Calgary did something similar when the new City Hall was built in the 80s. They knew that an 8th Ave subway would be built sometime in the future, so the bare tunnels for it were built under the City Hall during construction. If you take the C-Train between the Stampede grounds and City Hall, you will see a bricked-up gap on the west wall of the tunnel the runs east of City Hall. This is where the south leg of the C-Train will connect to the 8th Ave subway in the future (running under the City Hall building). I'm also told there is another piece of tunnel so that 8th Ave subway trains can eventually connect with the NorthEast C-Train line after running under City Hall.
Rumours say that the bare tunnels are being used for dead-file storage for now.
I hear here there is a study or report being done regarding building the 8th Ave subway, since the 7th Ave transit mall may be at capacity when the new C-Train West line is finished and plugged into the rest of the system.
The report may be released after their election in the fall so it doesn't become another election issue.
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wikipedia has some info on this subject:
Underground infrastructure
In addition to numerous tunnels to allow trains to pass under roadways, geographic features, and mainline railways, there are other notable underground portions of Calgary's C-Train system.
Part of the system through downtown is planned to be transferred underground when needed to maintain reliable service. Given this, portions of the needed infrastructure have been built as adjacent and associated land was developed.[31] As a result of this original plan, when the City of Calgary built a new Municipal Building, it built a short section of tunnel to connect the existing CPR tunnel to the future tunnel under 8th Avenue S. The turnoff to this station is visible in the tunnel on Route 201 entering downtown from the south, shortly before City Hall. However, after urban explorers discovered the tunnel and visited it during a transit strike[citation needed], the city walled off the spur tunnel with cinder blocks.
As the population of metropolitan Calgary increases and growing suburbs require new lines and extensions, the higher train volumes will exceed the ability of the downtown section along 7th Avenue S to accommodate them. To provide for long-term expansion, the city is reviewing its plans to put parts of the downtown section underground. The current plans allow the expanded Route 202 (Northeast/West) to use the existing 7th Avenue S surface infrastructure. The expanded Route 201 (Northwest/South), currently sharing 7th Avenue S with Route 202, will be relocated to a new tunnel dug beneath 8th Avenue S. The future Southeast/Downtown route will probably enter downtown through a shorter tunnel under one or more streets (candidates include 2nd Street W, 5th Street W, 6th Street W, 8th Avenue S, 10th Avenue S, 11th Avenue S, and 12th Avenue S). The future North line will probably share track from the Zoo station through downtown with the existing Northeast line (Route 202), avoiding the cost of a tunnel until passenger volumes grow.[25] Although Calgary City Council commissioned a functional study for the downtown metro component of the C-Train system in November 2007, the city is unlikely to complete this expansion before 2017 unless additional funding is received from provincial or federal governments.
http://en.wikipedia.org/wiki/C-Train