Hadley Bow Bridge, listed on the National Register of Historic Places in 1977, was constructed in 1885 on masonry-built foundations to replace a burned 1813 timber covered bridge. It is an example of a lenticular, or lens-shaped, truss and is one of only two or three bridges of the half-through, or semi-deck, variety. Its deck is located at the middle of the trusses rather than at the top or bottom. A striking example of late-nineteenth-century early American bridge building and engineering ingenuity, it was permanently closed to all traffic in 1983, effectively dividing the Town of Hadley in half. The original bridge was later painstakingly restored while maintaining its architectural beauty within the Sacandaga River valley.