The 20th Avenue NE Bridge (also known as the Ravenna Park Bridge) is a three-hinged, steel, lattice-arched bridge that spans a ravine in

Seattle Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest regio ...

Ravenna Park Ravenna Park and Cowen Park comprise a single contiguous recreation and green space in the Ravenna neighborhood of Seattle, Washington in the United States. These public parks encompass the ravine with a maximum depth of through which Ravenna Cr ...

. It was designed by Frank M. Johnson under the direction of city engineer Arthur Dimock. Built in 1913, the structure is both listed in the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic ...

and is a designated city landmark. The structure is long. It has a arch that rises over the ravine. It supports an reinforced concrete roadway. Beginning on March 11, 1975, a four-month trial began wherein the bridge was closed to vehicular traffic. The bridge did not meet the standards for arterial roads at the time, and upgrading the bridge would have been cost prohibitive. The trial period was successful and the bridge has been closed to vehicle travel ever since, but it is accessible by pedestrians and cyclists. Image:20th Avenue NE Bridge, Seattle, 1914.jpg, The newly constructed 20th Avenue NE Bridge (now known as Ravenna Park Bridge), Seattle, Washington, U.S., 1914. Originally a bridge for automobiles, it was eventually pedestrianized. Image:Cycling Over Ravenna Park Bridge (now a pedestrian and cyclist bridge only).JPG, A person rides a bike over the 20th Avenue NE Bridge.

References

{{Bridges of Seattle Bridges in Seattle Bridges completed in 1913 Road bridges on the National Register of Historic Places in Washington (state) National Register of Historic Places in Seattle Pedestrian bridges in Washington (state) Former road bridges in the United States 1913 establishments in Washington (state) Open-spandrel deck arch bridges in the United States Steel bridges in the United States