Given the facts that there is a lots of screws ups and cost over runs on the Georgetown Line, real work will not start until 2016. Some simple work like adding the 2 tracks is spots that will not interfere with the current line could happen before then, as well bridge widening.
At present time, the west diamond is on part hold, as they have to design the floating slab, as the waterline in not where it was supposed to be. $$ change order plus the cost of redesigning.
The sub pier support for the Queen St bridges are too short and will have to be raise about 75mm and have more grout place under it. $$ change order.
The Bloor bridge is in the wrong location and has to be shifted. On top of that, the soil investigation was flaw to the point that the current foundation needs to be beef up. $$$
The Dupont bridge had a number of problems and cases $$ change orders. Even Brock and Lansdowne bridges were not spare.
Because of timeline to meet various funding timelines, a number of things were rush out the door that caused all kinds of issues as well $$. In some cases, its going to cost more to add to some of these project because no real time was used to look at the big picture than that one item.
Contractors and trades follow the plans prepared by the consultations under GO/Metrolinx control and supervision.
The opening of the Brampton station was delay more, as the camera were forgot to be order and was noticed when the station was to open.
Gee!!! did a fair number of TTC employees switch company's, as this is the one hand not talking to the other hand problem that TTC has today.
Brutal!! Were these errors by the contracted design firms, by Metrolinx, or by the construction contractors? If it's #1 or #3, there may be grounds for a potential lawsuit there.