- Trajan's Bridge
Trajan's Bridge ( _ro. Podul lui Traian; Serbian: Трајанов мост, "Trajanov Most") or Bridge of Apollodorus over the Danube was a Roman bridge, the first to be built over the lower
Danube. For more than a thousand years, it was the longest arch bridge in the world to have been built, in terms of both total and span length. The bridge was constructed by the architect Apollodorus of Damascus.
The bridge was situated east from the
Iron Gates, nearby the present-day cities of Drobeta-Turnu Severin( Romania) and Kladovo( Serbia). Its construction was ordered by Emperor Trajanas a supply route for the Roman legions fighting in Dacia("see Dacian Wars").
The structure was 1,135 meters in length (the Danube is 800 meters-wide in that area), 15 meters in width, and reached 19 meters in height (measured from the river's surface). At each end was situated a Roman "
castrum", each of them built around an entrance (crossing was possible only by walking through the camp).
Apollodorus of Damascus, used wooden arches set on twenty masonry pillars (made with bricks, mortar and pozzolanacement) that spanned 38-meters each [Troyano, Leonardo Fernández, "Bridge Engineering - A Global Perspective", Thomas Telford Publishing, 2003] . Nevertheless, it was built over an unusually short period of time (between 103and 105) — one possible explanation is that the river was diverted during the bridge's construction.
A Roman memorial plaque, 4 meters in width and 1.75 meters in height, commemorating the completion of Trajan's military road is located on the Serbian side facing Romania near
Ogradina. It reads: :IMP. CAESAR. DIVI. NERVAE. F
NERVA TRAIANVS. AVG. GERM
PONTIF MAXIMUS TRIB POT IIII
PATER PATRIAE COS III
MONTIBVUS EXCISI(s) ANCO(ni)BVS
SVBLAT(i)S VIA(m) F(ecit)
The text was interpreted by
Otto Benndorfto mean::"Emperor Nerva son of the divine Nerva, Nerva Trajan, the Augustus, Germanicus, Pontifex Maximus, invested for the fourth time as Tribune, Father of the Fatherland, Consulfor the third time, excavating mountain rocks and using wood beams has made this road."
Destruction/erosion and remains
The bridge was destroyed by
Aurelian, after the Roman Empire withdrew its troops from Dacia.
The twenty pillars could still be seen in the year 1856, when the level of the Danube hit a record low. In 1906, the International Commission of the Danube decided to destroy two of the pillars that were obstructing navigation.
In 1932, there were 16 remaining pillars underwater, but in 1982 only 12 were mapped by archeologists — the other four had probably been swept away by water. Only the entrance pillars are nowadays visible on either bank of the Danube. [ [http://ipsnews.net/interna.asp?idnews=20822 Romans Rise from the Waters] ]
*cite book|first= Colin |last=O'Connor|title=Roman Bridges|publisher=Cambridge University Press |year=1994|id= ISBN 0-521-39326-4
List of Roman bridges
Trajan's Dacian Wars
* [http://ipsnews.net/interna.asp?idnews=20822 Romans Rise from the Waters] - Excavations
* [http://traianus.rediris.es/ Traianus] - Technical investigation of Roman public works
structure = Bridges
bridge = Trajan's Bridge
upstream = Iron Gate
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