Bridges first begun being built in ancient times when the first civilizations started rising in the Mesopotamian. They could not span a long way because mortar was not yet invented because dirt fillings would wash away by rain.
In the nineteenth century, bridge building became a strong focus after a backlash brought about by disasters in which bridges failed to endure predictable loads. Disasters that could have just been a dense crowd of people that could be up to 140 pounds per square foot.
One of the first big project was the Cincinnati bridge that called for a 1057 foot long suspension bridge over the Ohio river. And the man who was constructing that project was Washington.
Caissons were a very important part of the bridge. Which they were made from wood and iron from the shipyard on the east river, then sealed to be waterproof, were then launched down a ramp into a river just like a ship.
From the bridges in Rome, to the Brooklyn bridge, many things have changed the way that bridges are built and the leaders that have constructed them since then.
Created with images by Smabs Sputzer - "Very Old Postcard" • Patrick Feller - "Pony Girder Railroad Bridge over Cedar Bayou, Baytown, Texas 1309281515BW" • Seattle Municipal Archives - "Crowd on half-built Fremont Bridge, circa 1916" • Wildernessman - "john a roebling bridge cincinnati bridge cityscape" • MSVG - "Humber Bay Arch Bridge" • Jauher Ali Nasir - "Brooklyn Bridge"