Whenever any person is about to erect, change or repair any building within five feet of the line of a traveled street, such person shall build and maintain a temporary sidewalk or bridge, not less than four feet or more than six feet in width, contiguous to the lot line of the premises on which the building is to be erected. The sidewalk or bridge shall be constructed in such manner as the Building Commissioner directs. When the building is one story high, the sidewalk or bridge shall be roofed and provided with barricades so as to completely protect passers-by and shall be properly lighted from sunset to sunrise. A warning light of red or amber glass shall be hung at each end thereof at all times between sunset and sunrise so as to be visible to pedestrians on such sidewalks.
(1956 Code Sec. 16.5)