The Cold River Bridge, also known as McDermott Bridge, is a historic wooden covered bridge over the Cold River in Langdon, New Hampshire, USA. Now closed to vehicular traffic, it formerly carried Crane Brook Road, which now crosses the river on a modern bridge nearby. The bridge is 78 feet (24 m) and 12 feet (3.7 m) wide, and is a single-span Town lattice truss. Built in 1869 by Albert S. Granger, it is the fourth bridge to stand on the site.