Highway 7 - Kitchener to Guelph

[Coke6pk]

So apologies if this has been asked/explained elsewhere... but everytime I drive by this area I have the same question.

How do we build the two Wellington/Shirley connector roads under the railway without disrupting our (hopefully increased) service? Every other overpasses I have witnessed being constructed, the railway snakes around until the underpass is built then rail lines straightened out. With this one, there is a highway bridge that prevents just moving the line off to the side.

I assume they may just close one of the two doubled lines at a time, but having excavation work that close to the second line I would of assumed as being risky.

Any experts?

Coke