The original bypass plan didn't really revolve around CPKC, it merely posited that it would be cheaper to shift CN off the Halton Sub onto a new line than enlarge the Halton Sub to accommodate all users. In the end Ontario chose to go ahead with modest expansion along the CN line to add some GO service.
One suspects that there will still be an upper limit to how much passenger service can be added without an even larger expansion.
I wonder if the same dilemma may exist for the Milton line - is it cheaper to shift CP to a bypass route so that the Milton line does not need expansion to grow to 2WAD?
And the other dilemma may be catching up with us - would it make sense to add CN to that bypass rather than make further enlargements to the Halton Sub, given that there is even greater potential passenger capacity required that has been committed to date?
Perhaps the bypass isn't dead after all, timing is everything.
- Paul