44 North
Senior Member
I may have missed something in the DRL thread, but what is the ratio of viaduct to surface to tunnel in the valley? What would we see in, say, Riverdale Park?
Sorry, hadn't seen your query. Basically the only elevated sections are two of the three valley crossings: Riverdale East + West, and ET Seton Park. The crossing between Broadview and Laird would simply be a bridge (which I included in the "viaduct" measurement). I didn't want the line to use the valley floor through Riverdale because of its low elevation (flooding), and to keep the park and pathways unobstructed. From south to north:
-tunneled section under King and up River St to a valley wall portal
-a low elevated portion through Riverdale Park East, over Don/DVP etc and continued north to another portal
-tunneled section under Broadview Stn which curves west to a portal and DVP flyover onto the CP Don Branch
-surface on the Don Branch and a rebuilt bridge across the valley
-continued use of CP Don Branch to Leaside where it dips into a tunnel and uses another elevated portion over ET Seton
-this then passes back into a tunnel under Don Mills station.
It's a bit complicated to quickly write down, which is why I was hoping the oblique aerial image I used for my map would help the viewer understand the lay of the land; or what type of infrastructure would be needed where. Maybe it wasn't so obvious, but what's required is nothing extreme. The elevated portion would be on par with current B/D section through Humber valley. And basically everything else has components similar to what we have across our subway system and the Georgetown South/UPX project. I may make a new map which will clearly show the viewer what exactly is needed for each section.
Here's my latest GO REX map.
Holy shit, this is amazing. I like the idea of splitting the route in KW to reach Cambridge. And although a route to Peterborough has basically been shelved in the real world, I can see it being viable sometime in the future. I'll have to analyze this further, because this is quite the map.