Riverwalk Bridge The Riverwalk Bridge is Littleton NH's only covered bridge. This 352 foot, Warren Truss pedestrian bridge was completed in September 2004 Littleton, NH Other Attractions Country Squire Motel Littleton, NH Businesses Art to Go Littleton, NH Other Attractions Lisbon Economic Development Littleton, NH Other Attractions Advanced Graphic Communication Littleton, NH Other Attractions