GO Transit

[ZEBuilder]

Will capacity be upgraded, or just the infrastructure? It would be useful to be double-tracked but I don't know how big of a step that would be.

This is a project that I don't have any insider information on so I don't know the answer. However the construction notice says "the scope of work includes the replacement of bridge spans,
rehabilitation of existing piers, and construction
of new piers and abutments to support the new structure". 

Obviously Metrolinx hasn't been the best when giving out construction notices, the recent ones have been AI trash. However, the fact it says construction of new piers and abutments along with rehabilitation makes it seem like they're twinning the bridge, the duration is also rather extensive for rehab works. Later in the notice it also says the use of drill rigs is expected which aren’t the most common when it comes to rehab works, certainly possible but rare. Given all that I'd guess they're going to twin it.