The Seven Bridges of Paso Mayor facts for kids

The Seven Bridges of Paso Mayor is a railway bridge belonging to the Rosario Puerto Belgrano Railroad, which crosses the course of the Sauce Grande River in the limits of the Coronel Rosales and Coronel Pringles Municipalities, south of the Buenos Aires Province, Argentina.

History

View of The Seven Bridges

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.

It was used by a railway for the last time in the year 1977 when the southern section of that railway branch was definitively closed by a decree of the de military government.

In the 90 'this railway line was concessioned with all its assets, who currently is the owner of the concession is the company Ferro Expreso Pampeano S.A., which never used the southern section of the branch before said.

Structure

Internal view of the bridges.

West view.

The support or bastion of each end are 266 meters each, each bastion has two wings. Each one of the boards of each section rests on six pillars that are in what was the bed of the formerly mighty river.

The entire structure of the bridge, both the "upper rope", "lower rope", "diagonal", "lower bracing", "upper bracing", "poles", "joists", "bolts" and other parts of the bridges were built according to the following generalities:

• Its parts should be accessible for inspection, cleaning, maintenance and repair.
• Its sections should be symmetrical, just like its rivets.
• The support system of the structure is separated from the masonry of the piles.
• Systems of brackets, braces or cords are used, so that the water rejected by the batteries does not cause deterioration in its lower part.
  

Declaration of Historical Heritage

In 2010 the Deliberative Council of the Coronel Rosales Municipality declared it "Architectural, Historical and Cultural Heritage". In 2012 it was declared a provincial historical heritage by the legislature of the Buenos Aires Province.