Original caption: "The old bridge across the Charles River at this point had become unsafe. This new bridge is a single span of 105 feet and consists of a three-hinged steel arch encased in concrete supporting a 40-foot roadway and two 6-foot sidewalks. The arch is composed of seven structural-steel, spandrel-braced, three-hinged arched ribs spaced 8 feet 4 inches on centers except the outside ribs which are spaced 9 feet 2 inches from the typical ribs. The abutments are mass concrete enclosing the old stone abutments. A center pier from the old bridge was removed. The project was completed in September 1935 at a construction cost of $45,586 and a total project cost of $50,131."