Hi, friends today we are going to learn about a interesting topic related with our daily life....
Bridge :
A structure that is built over a river, railway cross ,mountain tips, junction to allow people and vehicles to cross from one side to the other without losing the time and the communication of daily life to be easier ...
Today's post related about The World's First Iron Bridge;
When and Where The World's First Iron Bridge Opens?
>The completed iron bridge first opened one New Year's Day 1781, The bridge spanning the River Severn Gorge near Coalbrookdale, England, was the idea of young architect Thomas Pritchard. He commissioned Abraham Darbylll, just twenty-nine at the time and a Quaker iron-master--- whose grandfather Abraham Darby l had triggered the industrial Revolution by inventing the smelting of coke powder to make iron -- to build the pioneering design for a single-span, 120-foot (37 m), 378-ton bridge, using massive parts, the largest of which was 70 feet (21 m) long.
The bridge used iron to mimic traditional woodcarving techniques-- such as mortise and tenon, dovetails, and wedges--to feet join together. Although Pitchard died in 1777, work on the bridge continued, financed by another local iron-master, John Wilkinson. It was completed in 1779, although the approach roads took another two years. No records were kept on the construction, and exact detail remained a mystery until 2002, when a watercolor by Elias Martin was discovered in Sweden showing how it was made. The bridge become so celebrated that a new town, Iron bridge, grew up around it.
Darby overspent and was in debt for the rest of his life, but the bridge, although over-heavy and subject to cracks around its foundations, survived and is now recognized as a milestone's in the worlds industrialization. in 1987, Iron bridge was declared a World Heritage Site, attracting a tourist industry that celebrates the industrial Revolution.
