While I applaud the concept of making the space at the corner of Rideau Street and Colonel By Drive greener and more people-friendy, as usual with grand NCC visions, it puts form ahead of function. The end result of this vision will look great, but will ultimately be detrimental to many users of the space. The NCC seems incapable of designing spaces for all users.
Just think of the Western Parkway along the Ottawa River, which looks beautiful, but which in reality is a huge tract of sterile riverfront property that simply cuts off access to the river for most citizens (all but a few cyclists, walkers, beach-goers, and drivers who admire it from their car window). The only real winner in the Parkway project is the commuter, as this space is really just a fancy commuter corridor.
The NCC Vision Statement for the Rideau/Colonel By gateway node is:
"to reclaim this historic space and transform it into an icon of the Canadian experience on the Confederation Boulevard. The node will convey a significant Capital to the world and be representative of Canadian values, ideals and role on the world stage."
Later they elaborate: "a strategic place; a place for people; a place of arrival and dispersal reflecting its historic role as a crossroads and destination""
I suspect that the loser in this scenario will be the driver. Maybe it's only fair to balance out the Western Parkway commuter win?
I say this because the traffic flow reconfiguration appears to be ill-conceived. In the existing situation, there is a dedicated through lane from southbound MacKenzie Ave. across the ramp to Colonel By Drive. There is also a dedicated right-hand turn lane that moves traffic from eastbound Wellington/Elgin Streets onto the MacKenzie Ave. ramp and along to Colonel By Drive. Both of these traffic patterns keep drivers away from the intersection at Sussex/Rideau Streets. According to NCC traffic counts, these two routes carry a significant number of vehicles:
As previously mentioned, Scenario 3 seems to be the leading design proposal (
http://www.canadascapital.gc.ca/data/2/rec_docs/15655_Presentation%20Mtg2.pdf), and its major feature is the complete removal of the MacKenzie Ave. ramp linkage to Colonel By Drive, and the problematic pedestrian underpass beneath it. Score a win for pedestrians. Here's what it could look like:
Unfortunately the aforementioned MacKenzie Ave. traffic must now cross the general eastbound Rideau Street flow and merge into a very short right-hand lane before making the turn onto Colonel By Drive. Throw-in the usually heavy pedestrian traffic that uses the crosswalks at the Sussex/Rideau intersection, and this just screams bottleneck to me.
Without some very well-timed traffic signals, and other measures, this intersection could become a traffic nightmare.