The Opawa River Bridge is a bridge in Blenheim, New Zealand that crosses the Ōpaoa River. The bridge is classified as a "Category I" ("places of special or outstanding historical or cultural heritage significance or value") historic place by the Heritage New Zealand, formerly known as New Zealand Historic Places Trust. The bridge was first built in 1869 but collapsed in 1878. A new bridge was not completed until the end of 1917. Grove Road utilises the bridge, which forms part of the State Highway 1.