The Francisco Sá bridge over the Paraná river in 1968; at the right one can see the Jupiá hydroelectric dam and power plant, that had just been erected. Note that the river level is abnormally low under the bridge. When this photo was shot, the lake of the hydroelectric power plant was being formed and river flow after the dam was severely restricted. The copy of this photo is a kindly offer from José Henrique Bellório, from Bauru SP.