The Norwottuck Rail Trail Bridge is an eight-span steel lattice truss bridge. It crosses Elwell Island in the middle of the river, providing no access to the island in an attempt to keep the island otherwise untouched. Riding over the bridge shows eight spans, with two of them over Elwell Island. It was built by the R. F. Hawkins Ironworks Company.
To survive the 1936 flood, railroad cars loaded with scrap metal were placed on the bridge to weigh it down.