The Three Countries Bridge is an arch bridge which crosses the Rhine between the commune of Huningue ( France) and Weil am Rhein ( Germany), within the Basel (Switzerland) metropolitan area. It is the world's longest single-span bridge dedicated exclusively to carrying pedestrians and cyclists. Its overall length is 248 metres (813 ft 8 in) and its main span is 229.4 metres (752 ft 7 in).Its name comes from the bridge's location between France, Germany and Switzerland (which is about 200 metres (660 ft) distant). It was designed by the Franco-Austrian architect Dietmar Feichtinger.