The bridge was built circa 1896-7 to carry the tracks of the Boston and Maine Railroad across the Winnipesaukee River between Franklin and Tilton.

[1] The bridge, unused since 1973, is not in good condition, having been subjected to graffiti, vandalism, and arson, as well as the elements.

The Sulphite Railroad Bridge is located about 0.7 miles (1.1 km) east of downtown Franklin, and about 350 yards (320 m) south of US Route 3, and crosses the river at a point where its banks are quite steep; it is not readily visible from any roadway, but may be seen from the Winnipesaukee River Trail.

The bridge is 234 feet (71 m) long, and consists of three spans, each supported by Pratt trusses resting on granite piers or abutments.

The bridge acquired its name for the large amount of sulfite carried by the rail line to paper mills in Franklin.