Otowi Suspension Bridge, Suspension bridge in Santa Fe County, New Mexico

The Otowi Suspension Bridge is a wooden, single-lane suspension bridge for road traffic spanning the Rio Grande near San Ildefonso, New Mexico. Built in 1924, it carries a timber deck on cables and is now used only by pedestrians. It was listed on the National Register of Historic Places in 1997.

Built in 1924, this bridge opened easier access to Bandelier National Monument for visitors and residents. During the 1940s, it became part of the transportation network that supported the Manhattan Project operations in the area.

The bridge stands in the Otowi Historic District, listed on the National Register in 1975, with the bridge itself added to the register in 1997. Its name comes from the nearby Otowi crossing of the Rio Grande, a route long used to reach San Ildefonso Pueblo on the west bank.

The bridge is now a pedestrian crossing; vehicles have been barred since a two-lane steel truss bridge opened just north of it in spring 1948. Walkers reach it near San Ildefonso in Santa Fe County, and the deck is a single wooden lane, so expect a narrow crossing over the Rio Grande.

In a 1987 survey it was rated the best bridge in New Mexico, and its 1996 National Register nomination cites significance in transportation and engineering. It was also the state's only public highway suspension bridge. The 1924 wooden single-lane span now carries pedestrians beside the Rio Grande.