"The 200-foot deck-plat e girder bridge over Factory Pond is the longest of the railroad bridges in Blackstone. It is composed of two nearly identical spans, each with girder depths of 9'-0". The two girder stringers which make up each span are laced together with angles and gusset plates, with a 20-inch wide plate making up the top and bottom flanges of the girders . Although the abutments appear to have been designed for two tracks, the concrete center pier was only designed for a single track."
-P.H. Stott, 2/1988