Highway 7 - Kitchener to Guelph

[KevinT]

Also, those two different options you mention are only about the Silver Junction east of Georgetown, not anything to do with the bottleneck between Bramalea and Georgetown which is only two tracks from Mt. Pleasant to Georgetown and parts of Bramalea to Mt.Pleasant.

Silver Junction is the cap on that bottleneck though, because as it stands today, mainline CN freight entering and leaving at the junction ultimately has to cross the Kitchener-Union passenger traffic running through it. The majority of the CN traffic going through there runs between the southwest (Hamilton) and northeast (Vaughan), while all the passenger traffic goes between the northwest (Kitchener) and southeast (Toronto/Union). A fly-over at Silver would route passenger trains overtop of the freight, completing a crossover without competing for schedule time. It's not as good as the Missing Link, which would have been a proper future-proofing of both the Kitchener and Milton lines with a future Crosstown service thrown in, but it's far far better than the status quo which treats the entire Georgetown to Bramalea section as a stretched out diamond with a passing siding.

Edit to add: The signal gantries between Mt Pleasant and Georgetown GO are set up for three tracks, and the bridge piers at the Credit River already support a third track as well. Brampton GO and its immediate surroundings are the only true bottleneck once a Silver Junction flyover is complete, and a far shorter one than the entire Georgetown to Bramalea corridor.