Construction, reconstruction or repair of sidewalks performed by the City under contract shall be by contract let to the lowest responsible bidder upon invitation by a notice published three successive days in the official City newspaper. Plans and specifications shall be approved by the City Engineer before any contract for sidewalk construction is awarded. (Ord. 17439 § 6, 12-7-99. Code 1981 § 40-166. Code 1995 § 130-374.)