the northern routes to Guelph were screened out earlier in the process. here are the slides from the June 2010 public consultation
http://www.gta-west.com/pdf/6720GTAWestPIC4Panels-June14-2010.pdf
It seems that based on the report the only real factor why it was screened out was the environmental impact. It had equal economic benefits, and was one of the best choices in terms of serving the transportation demands.
Going through the Escarpment, yes I can see how it can be a problem. But putting a transportation corridor through the Greenbelt? I know when the Greenbelt Act was enacted, a lot of farmers whose land was inside the Greenbelt were pretty pissed, because it basically made their land worthless because it couldn't be sold off for development. The only thing they could sell it for was for other farming activities. A lot of farmers had their retirement plans go up in smoke when that plan was passed.
Sure, it would be better to have a transit corridor through the Greenbelt instead, but that's not very likely to happen. An expressway isn't the best option, but I'd take an expressway through Greenbelt lands than somebody trying to push through a rural residential subdivision.
I know this makes me sound like I'm anti-environmental, but I'm really not. I just don't get this whole notion of "oh it's greenbelt lands, therefore we have to take a BANANA approach". For a lot of the Greenbelt lands, there's very little to differentiate one side of the road which is protected lands from the other side of the road that isn't. It's a 100m wide ROW, not a massive subdivision that we're talking about here.
The Escarpment is a different story though, but I'm sure there can be some ways in which the impact can be minimized.
But I don't think that is project should be ruled out solely for environmental reasons, especially when the economic and transportation benefits are either at par or better than the other options.
I renamed my map as Highway 413 as well.
Highway 413 definitely makes sense, and it goes with the naming convention of E-W highways having odd numbers. Also, Highway 13 doesn't exist, neither does 14 for that matter, so if there is a need for a new N-S 400-series highway, that would work too.
Come to think of it, it may make sense to number the Hanlon Highway 414 if they don't manage to do a name swap with the existing Highway 406.