The bridge was designed by Italian engineer Riccardo Morandi, and constructed by Concor between 1953 and 1956.
[citation needed] The main span of the bridge consists of a reinforced concrete arch structure spanning between two concrete abutments located on the western and eastern sides of the river.
The main arch structure was constructed in a unique fashion: the complete arch was divided into four semi-arches which were built with climbing formwork in an essentially vertical position on opposite sides of the gorge.
These were then rotated and lowered into position in pairs to meet at the centre, thus forming the completed arch structure.
You can help Wikipedia by expanding it.This article about a South African building or structure is a stub.