§ 99. Alteration of grades and names of streets. The grade of any
street shall not be fixed or established except by direction of the
common council. The grade of a street heretofore or hereafter legally
established shall not be changed, except by direction of the common
council, and except also upon compensation for damages done, to be
ascertained in and by the proceedings provided by law for ascertaining
damages for lands taken for the opening of streets. The common council
shall not alter the name of any street except by ordinance. No ordinance
altering the name of any street shall be passed by the common council
until such ordinance shall have been published at least once in each of
two successive weeks in the official paper or papers.