When sidewalks, curbing, guttering, draining, paving or other street or alley improvements are in course of construction on any street, alley or other public place or highway in the City, the Board of Commissioners, or their designee, shall have authority to close such street, alley or other place against traffic or travel of every character, pedestrian included, for such time as such commission or designee shall deem necessary for the proper protection of the public safety and the security of the improvement. In such event traffic may be entirely restricted or limited to definite classes. The portion of such street, alley or other place to be closed shall be barricaded at the limits in such manner as to indicate to the public that the same is closed, and a placard or sign shall be erected at each limit stating that such street or alley or other place is closed by order of the Board of Commissioners. The erecting of such barricades and signs shall be deemed sufficient notice to the public and it shall be no defense to a prosecution hereunder that any such barricade or sign had been removed by some person without authority. (1980 Code § 30-46; amd. 2003 Code)