It was designed by Francis C. Lowthorp and built in 1870 by William Cowin of Lambertville.

[3] It is one of the few early examples of iron Pratt truss bridges remaining in the United States.

[4] The Main Street bridge is one of three remaining composite cast iron and wrought iron Pratt truss bridges built by Cowin in New Jersey.

The others are the New Hampton Pony Pratt Truss Bridge (1868) in New Hampton and the Glen Gardner Pony Pratt Truss Bridge (1870) in Glen Gardner.

[5] It features Italianate style end posts and decorative cast-iron guard rails for the pedestrian walkways.