Quote:
Originally Posted by moosejaw
If the canada line can climb the north arm bridge which is exactly as high as the tunnel is deep, tell me why it wouldn't it be able to make the climb?
It wont need tons of maintenance if only lrt or rapid bus traffic use it. Its illequipeed to handle 80k cars/trucks daily. But should stand up a long time for rapid transit use.
Im not saying run skytrain through there but at least explore the possibility for future usage.
Any form of rapid transit outside of bus service wont make the climb of the new crossing
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The height of the crossing isn't the concern - what matters is grade. The north arm bridge was designed for the Canada line so the track grade approaching it was designed according to the train requirements. Canada line ~2% max & rest of the system 6% max IIRC.
The existing massey tunnel isn't designed for a train, it's designed for vehicles & the grade would be in accordance with that. I don't know what it is exactly, but it's certainly well over 2%
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