The Hyperion Bridge is a concrete arch bridge viaduct in Atwater Village that spans the Los Angeles River and Interstate 5. It was constructed in 1927 by vote of the citizens that lived in Atwater Village at the time and was completed in February 1929. The bridge spans 400 feet over the Atwater section of the Los Angeles River and has four car lanes. Because of its age, the complex of bridges will be soon retro-fitted to be more seismically sound, including a new road configuration.