I agree that the first two components make sense. Lift the segments from truck onto the SPMT using a gantry crane on rails, and drive the loaded SPMT down to the end of the already completed bridge. That part keeps working without any repetitive tear down and rebuild. The part that seems cumbersome is the launcher which doesn't seem to move itself.^ When I rolled by on the GO Train today, I observed that two of the highway floats that haul the sections to Wallace had been placed atop the in-place spans. I guess that’ts how the spans are moved down the guideway to their installation point.
Personally I think the device is ingenuously clever - the lifts are much less complicated than if craning had to be placed all down the route, and the overhead portion just leapfrogs along.
That part keeps working without any repetitive tear down and rebuild. The part that seems cumbersome is the launcher which doesn't seem to move itself.
Sorry for my ignorance, but where does this go line start and finish? What was in place before, and why is this needed now??
I just like transit construction, I don't know much about transit outside of Scarborough tho
The Barrie GO line goes from Union Station in Toronto to the Allandale Waterfront station in downtown Barrie. The Barrie line crossed the CP Railway mainline at a ground level intersection in Toronto. The result was that whenever there was a freight train occupying the intersection, the GO train, with all its passengers, had to sit and wait until the freight train had moved out.
This was a bigger problem than might have otherwise been the case, as the freight trains at the intersection (the diamond) were usually very slow moving, or even stopped for periods of time, waiting to get into the CP yard area, south of the St. Clair stock yards.
The impact on GO service to and from the stops on the Barrie line was so severe that Metrolinx has funded creation of an overpass for the Barrie line, over the CP line, to eliminate the problem - the Davenport diamond grade separation project.
theyre currently working on 1 of the 2 future rail tracks going over CP's tracks.Thank you, you really answered all my questions with clarity. Makes total sense to me. My new question is, is the entire line elevated now, or just over the intersection. I didn't think these types of trains could make that incline
I believe the majority of the guideway is being built ready for both tracks from the start. There is only a small section (I believe on the North end) that will only be single track and then expanded to double track width once the single track is diverted from the current temporary location to its permanent location on the guideway. I don't believe the double-tracking across the guideway is part of this contract. It will be done on a separate contract after the guideway is complete.theyre currently working on 1 of the 2 future rail tracks going over CP's tracks.
I know this contractor will build the 2nd overpass after the first is completed, but not sure if they are doing the tracks as well on the 2nd overpass
Can anyone pipe in on that?
Been reading this forum for quite a while and am a resident in a nearby building. One thing I can say is when I moved in last spring there was nothing and within a year they built all of this. They were working day and night. Now it seems like the construction pace has slowed down. I am not sure if they are just trying to stretch the job for it to be delayed (usual construction mafia behaviour) or what? All I know is they better hurry up and make sure this thing and at grade tracks are removed by 2023 as planned as the loud war like noise from the trains metal wheels hitting the metal track crossing is unbearable. Ridiculous that they even built condos here before this project was completed. I’m sure the residents living here before me have been suffering much longer.