[mezzanine]

Thinking about it, the viaduct gains a lot of elevation alon g its length. After 1 block, trolley wires clear the bottom of the viaduct (~1-1.5 stories high). at Costco, trolley wires will not be able to touch the road deck, it must be ~ 4 stories high at that point.

ie. to build a new access road to dunsmuir/georgia to replace the viaducts you would have to go almost to quebec st to get a safe, functional road. you also have to account for the skytrain track if you get that far.