The question is how did closing the lanes on the bridge hurt the mayor.
Question not answered by you.
It obviously did not work and actually backfired adding stupidity and incompetence to what was already petty abuse of power, misallocation of resources and childish vindictiveness.
It did not hurt the mayor. It was to annoy him and to warn him. How is that not an answer? opr did you have a particular answer in mind that the interlocutee must give to be an answer? in which case I am sorry , I could not possibly know the particular words you require.