High Quality Content by WIKIPEDIA articles! The Bloukrans Bridge (Afrikaans:Blue Ridges) is an arch bridge located near Nature`s Valley, Western Cape, South Africa. The construction, which was completed in 1984, stands at height of 216m above the Bloukrans River, making it the highest single span arch bridge in the world. Its central span is 272m and the bridge is 451m in length in total.