This bridge is a bit different. First of all, it is on a college campus joining the main campus to some athletic fields. It was never meant for vehicular traffic. Students walk across it and the odd maintenance vehicle will drive over it.
Second, it was first built in 1972, but is listed by the state as a historic bridge. When Milton Graton and his son Arnold built it, they used traditional methods. For example, the framed trusses were pulled across the river by a team of oxen rather than cranes or tractors.
The Henniker Bridge was designed to replicate the traditional style of covered bridges. In 2022, it will be eligible for listing on the National Register of Historic Places.