Photo provided by The Fund for North Bennington, Inc
BH Photo #269286
Its already in trail use on the The Mile-Around Woods Trail. Its excellent that it was saved...even if it is just over a small ditch!
So is this the site of a future trail? Cause it sure looks like it's just sitting in the middle of a farm over a dry ditch? It's a shame they changed the width, but with the rarity and how long it sat in the landfill I'm glad they saved it!
Oooh. Looking at the HAER documents for the Upper Pacific Mills Bridge, the floor beams on that bridge were built-up plate triangular beams like the top chord. Possibly this bridge too had similar floor beams - at least originally. Again, I can't tell from the photos.
Also, those drawings for the Upper Pacific Mills Bridge reinforce the idea this is a tied-arch, not a truss.
By the usual definition of "truss", this is not a truss bridge because there are no triangles. A better term would be a tied arch. A pony tied-arch. No checkbox for _that_ here!
The lack of diagonals result in the vertical carrying only a tension load.
The counter arch is a real odd feature. It seems to me they are nearly useless. Inverted arches aren't especially useful. only be a benefit if the verticals are attached to it - not just passing through it. I can't tell from the 'photos if they are.
Anyway, I'm changing the design so it's similar to how it's listed for this other Moseley bridge.
Utterly amazing that this beauty sat in a landfill for 50 years and nobody scrapped it!
Very fortunate to say the least!
Patent # 59054 A - 1866 with improvements patented # 103765 A in '70
Great to see!
I would suggest importing the article and images in this article be imported into the site as the links may not be permanent.
Also, the bridge's original site is listed in the article and the article implies that 1857 is the patent date and this bridge was built around 1865.