One of my neighbours wrote to the City about the ponding @ Yonge and the unfinished corners @ Victoria and Yonge. Here is the response.
The ponding issues at the intersections in the work zone is due to clogged catch basins. During construction, cloth bags are installed to catch dust and other debris from entering the sewer. As part of the demobilization, the City’s contractor will be removing the cloth bags and will be flushing the sewers next week. This will resolve the issues with ponding in those locations.
The curb radi reductions at those intersections did not take place due to the TTC overhead wire poles and issues with underground areaways (old coal chutes, tunnels etc.).