King Street underpass at the transit hub

[kps]

Looks a bit narrow to get 2 trains in there, isn't it? Is this bridge not supposed to accommodate for a future 3 rail lines, like the Weber bridge does?

There doesn't seem to be any public information about the overpass design. The contract just says “grade separation to be designed and constructed by project company.” I'm sure the Region knows and Metrolinx knows but neither are telling the peasants.