On Wednesday afternoon, I took a trip to the Main Branch of the Ottawa Library to check out the Ottawa Room and read the recently-released environmental assessment (EA) of the Downtown Ottawa Transit Tunnel. If you're interested, you can read the massively massive document online at the Ottawa Light Rail website, although it's difficult to read on a computer screen. There were a huge number of interesting details in the document, some seemingly irrelevant (did you know that harbour seals used to come as far south as Ottawa, before the Ottawa River was damed?) and others quite enlightened, but there was no shortage of them.
Among the many assessments and suggestions the EA made was one about tunnel station design. The image below (click to enlarge) shows the four possible configurations, with various pros and cons to each one. Based on six objectives, it was decided that the first configuration (Fig. 8-21) was the
I've got to say, the centre platform seems to be the most rational choice of the group, even if it limits space for small retail outlets in the transit station. Still, there would be enough room for a convenience store and news shop, so it's got what commuters will need.
I'll try and offer more posts regarding the details presented in the EA in the coming weeks. If there are particular questions you've got about it, feel free to e-mail me, contact me on Twitter, or post a comment here and I can try and look into them.