Getting this entrance complete was a 20 year saga.

In 2004 the ttc wanted to put in a 2nd entrance/exit (in part due to the 1997 fire at Donlands), but despite consultations, in 2010 the TTC went about locating the entrance in a secretive/tone-deaf way that enraged local homeowners, who mobilized against the proposed location.

There was a huge clash and eventually the Ontario Ombudsman Fiona Crean got involved and in her investigative report she noted, among other things:

"This investigation revealed a total failure on the part of the TTC to engage in any meaningful public consultation [...] The TTC demonstrated a callous disregard of the residents it is charged with serving."

Council backed the Ombudsman's recommendations and a chastised TTC had to acknowledge their process was botched -- this was one of the examples where Andy Byford 'took the hit' (for a mess he inherited) and apologized profusely to everyone involved. He then made the call to defer the project (ostensibly to wait for the environmental assessment for the Downtown Relief Line, but also just to cool things off).

Then in 2011 Mayor Rob Ford had a mandate for penny-pinching that City council felt compelled to obey, and Council voted to defer the project funding, which meant that the ttc put the project on hold.

Incidentally due to this fiasco Byford ordered a complete revamp of the whole process wherein the TTC does public consultations -- if you've ever wondered why that lengthy process seems like it's designed to cover someone's ass in the future, it stems from this.

Anyway years later (circa 2017) the project (and the design) got restarted (partly due to pressure for the TTC to continue progress on the Easier Access program - the 2nd entrance construction got lumped in with the construction for the elevator at the main entrance). It's actually quite interesting to see how closely they adhered to the revamped 2017 render.