To be fair, as soon as it was pointed out to the elected officials, they agreed that something needed to be done (how long that's will take is another matter).
But a bigger question is why are the officials responsible for this work not planning and implementing things beforehand - esp given all the requirements of giving people notice etc?
This seems a very clear case where they have simply not considered non-motorised traffic at all., and given that it is one of the most used pedestrian crossings, and near several schools, that is simply pathetic.
I will ask for clarification on the procedures at the next traffic forum meeting.