it receives its name for being a bridge divided into seven sections, six of a type structure "cage" and one "open", is located in the paso mayor of the river sauce grande near the site of the same name. its construction was completed in 1908 and is part of the rosario puerto belgrano railroad, the same crosses from north to south, the south of the santa fe province and all the west of the buenos aires province, discarding the radial model towards the city of buenos aires that had all the british railways.