Quote:
Originally Posted by officedweller
So I guess the ramps for the Granville Bridge were the first elevated ramp structures anywhere in Metro Vancouver? and the first ones to use a pylon (T) type structure?
The old Georgia Viaduct was more of a bridge / trestle, and the other area bridges and bridge approaches seem to have the same sort of designs with steel trusses or post and lintel type of designs.
I wonder how much "push-back" they got for being innovative? or whether people complained about view blockage (like they do about the SkyTrain guideway, today?)
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Firstly, the GSB main span was constructed as a cantilever/truss bridge similar to the later IWM 2nd Narrows Bridge. I guess an apropos design for the era.
In that vein, the cable-stayed bridge design was first utilized in the AFB during the early 1980`s and later became the standard design for bridge structures in the region. (Suspect cost-effectiveness and high seismic standards were behind same - AFB designed to withstand 8.5 on the Richter Scale for structural damage).
Similarly, the off-ramps for the GSB were the first constructed as a pylon (T) type structure in the region (as ya describe same) as I suspect that was the then new construction method - as opposed to the steel posts of the original GSB, Cambie Street Bridge, and viaduct constructed back circa in the early 1900`s. Obviously different construction techniques back then.
Again. Time-line wise the original GSB replacement was proposed in 1948. Say 1949 & early 1950 for design. November, 1950 election for by-law approval with construction commencing in 1951.
Both my gut as well my sense of history, in terms of that era, tells me that the GSB was just good, long-term design. Have never seen any evidence to conclude that Granville St. on either side of False Creek was determined to be upgraded to `freeway standards` in that era - when Van City was still a major back-water.
Certainly, the concept of utilizing the GSB as a freeway connector was there perhaps a decade after the fact.
In that vein, the new Cambie Street Bridge, approved in the early 1980`s under Mayor `anti-freeway` Mike Harcourt, also had many off-ramps as well. Certainly the Cambie Street Bridge could be connected to a future freeway network... but we all know that concept was not on the radar screen back then either.
In any event, I certainly can`t say anything definitive about the GSB from circa 1950. But ya got the bug in my ear and now I wanna go down to Van City Archives (one of these days) and review both the council and CoV correspondence & internal reports, from back then, as well as the GSB engineering report as well in order to confirm my suspicions.
PS. As far as I know, in that `conservative` era of early 1950`s, the concept of civic `push-back` was non-existent. Seems that concept only came into vogue after 1965 with Bob Dylan`s then apt top-hit: "The Times They Are a-Changin" defining that subsequent turbulent era.