Trajan's Bridge was a bridge built by Apollodorus of Damascus, the architect of the Column, between the spring of 103 and the spring of 105 [1] on the Lower Danube, east of the Iron Gates, in the town of Drobeta-Turnu Severin. The purpose of the construction was to facilitate the transport of roman troops led by Trajan and the necessary supplies for the second military campaign to conquer Dacia of King Decebalus. At Drobeta between the 2 Dacian wars, Apolodor builds a bridge of 1.1 km for the Roman empire to manage to cross the murky waters. Engineer E. Dupex in 1907 rebuilds the bridge.