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Autoroute 640-Montreal

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Chrysler375Freeway:
Does anyone know why Montreal has an incomplete beltway, and why Autoroutes 30 and 640 do not connect to one another?

Alps:
Best resource: http://www.montrealroads.com/roads/A-640/

webfil:
Steve Anderson has most of the story right, but I have yet to see an recent official document regarding the Oka-Hudson routing. While the idea pops once in a while here and there (from this engineeing bulletin in 1974 to some chamber of commerce in 2012), the only official allusion I can find is a 1966 press release regarding the inception of the primitive autoroute numbering system ― and it's still very vague about the schedule and the routing, citing only two towns as terminuses.

Beyond 1970, official maps call for a western terminus of A-640 at Saint-Placide. The choice of Mirabel as a site for the new airport called for a revision of the highway planification northwest of Montreal; if a new east-west expressway was to serve Mirabel, it would run farther north than A-640 and double as a Montréal bypass towards Ontario and western Québec, with A-13 connecting both at the western tip of the metropolitan area (interview with De Belleval, Transport minister in 1981). 1981 is before the standoff between aboriginal peoples and the army at Oka, and right after a national park was created at the very terminus of autoroute 640.

The most recent (2003) proposal about A-640 completion is the ¾-loop (A-640 and A-30, with a bridge in Repentigny), that motivated the completion of A-30. I give more details about A-640 in a two-post series in another topic.

tl;dr
A full loop looks good on a map, but a bridge over Outaouais river would be as useless as socially explosive.

Chrysler375Freeway:
I will also add that Montreal was planned to have an inner loop component inside 640/30 called A-415. The plug was also pulled on that. What was the reason behind the plug being pulled on it?

LilianaUwU:

--- Quote from: Chrysler375Freeway on October 18, 2021, 09:30:02 PM ---I will also add that Montreal was planned to have an inner loop component inside 640/30 called A-415. The plug was also pulled on that. What was the reason behind the plug being pulled on it?

--- End quote ---

If I'm not mistaken, it would be the same as most cancelled freeway plans inside cities: the planned right-of-way was too developed to be used. Don't quote me on that, though.

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