Every person excavating in any street shall, as may be necessary and/or in compliance with any order of the Division, maintain safe crossings for vehicles and pedestrians at street and alley intersections; safe crossings for pedestrians at intervals of not more than 300 feet; safe passage for vehicles and pedestrians when the excavation runs across the width of a street, and free access to all fire hydrant and water gates. Whenever routing traffic over the center line of the street is necessary, the Division shall be notified and it shall cause traffic lanes to be marked by means of barriers, rubber cones, striping, signs or similar devices, so as to leave no doubt as to where it is intended that traffic should flow past the obstruction. All materials for excavation shall be laid compactly along the side of the trench and kept trimmed up so as to cause as little inconvenience as possible to traffic. If the street is not of sufficient width to handle the excavation material without using a portion of the adjacent sidewalk, the person making the excavation shall erect a tight board fence upon and along such sidewalk and keep a passageway of at least two and one-half (2½) feet in width open upon and along said sidewalk, provided that the City Engineer may require wider portions of such sidewalk to be kept open in cases where such wider portions are considered necessary for public safety, convenience or welfare. All gutters shall be maintained free and unobstructed for the full depth of the adjacent curb and for at least one foot in width from the face of such curb at the gutter line. Whenever a gutter crosses an intersecting street, an adequate water way shall be provided and maintained at all times.
('65 Code, § 30-41)