The Swayback Bridge in Ramsey Park, Redwood Falls, MN was engineered and constructed by the Civilian Conservation Corps. It is preserved as a National Historic Site. The design allows ice breakup to go over the road surface rather than repeatedly damaging the underpinnings of the bridge. Olympus OM-D E-M1, Panasonic Lumix G Vario 12-35mm zoom lens, 1/4000 sec, f5.6, ISO 1600.