Bridges_notes

=//Bridges//=

=== The first bridges were discovered by men on the nature (as simple as a log fallen across a stream). The first bridges made by humans were probably made of stone or /and wood and they were weak in therms of carriying weight. The ancient Romans built arch bridges and aqueducts the Romans also used cement, these technologies was forgotten and later re-discovered... ===

=== Rope bridges, were used by the Inca civilization in the Andes mountains of South America. In the 19th century and thanks to materials like steel and iron (especially steel) the bridges could be improved to reach larger distances. And imporve in solutions too, like truss bridges. ===