The Victoria Falls Bridge crosses the Zambezi River just below the Victoria Falls and is built over the Second Gorge of the falls. As the river is the border between Zimbabwe and Zambia, the bridge links the two countries and has border posts on the approaches to both ends, at the towns of Victoria Falls, Zimbabwe and Livingstone, Zambia.

The bridge was the brainchild of Cecil Rhodes, part of his grand and unfulfilled Cape to Cairo railway scheme, even though he never visited the falls and died before construction of the bridge began. Rhodes is recorded as instructing the engineers to "build the bridge across the Zambezi where the trains, as they pass, will catch the spray of the Falls". It was designed by George Andrew Hobson of consultants Sir Douglas Fox and Partners, assisted by the stress calculations of Ralph Freeman, who was later the principal designer of the Sydney Harbour Bridge. The main central arch is a parabolic curve.

More Info: en.wikipedia.org