I am trying to compile a list of the largest premodern masonry bridges by span. Almost all are, perhaps unsurprisingly, located in Western Europe. "Premodern" means in this context prior to the construction of the British The Iron Bridge (http://en.wikipedia.org/wiki/The_Iron_Bridge), the earliest arch bridge made of iron in 1775.

Puente (de) la Reina (http://en.wikipedia.org/wiki/Puente_La_Reina), Spain 25 m
Puente del Arzobispo, Spain 27 m
Fleischbrücke (http://en.wikipedia.org/wiki/Fleischbr%C3%BCcke), Germany 27 m

Ponte Grande, Switzerland 30 m
Castellbell y el Vilar, Spain 30 m
Ponte Vecchio (http://en.wikipedia.org/wiki/Ponte_Vecchio), Italy 30 m
Benamaji Bridge, Spain 31 m
Pont du Diable (Olarques) 32 m
Ponte Santa Trinita (http://en.wikipedia.org/wiki/Ponte_Santa_Trinit%C3%A0), Italy 32 m
St. Benezet (http://en.wikipedia.org/wiki/Pont_Saint-B%C3%A9nezet), France 34 m
Monistrol, Spain 37 m
Ponte di San Francesco (http://de.wikipedia.org/wiki/Ponte_di_San_Francesco), Italy 37 m
Puente del Diablo (Martorell) (http://en.wikipedia.org/wiki/Puente_del_Diablo_%28Martorell%29), Spain 37 m
Ponte della Maddalena (http://en.wikipedia.org/wiki/Ponte_della_Maddalena), Italy 37.8 m
Ponte Vella de Ourense, Spain 38 m
Almaraz Bridge, Spain 38 m
Puente de San Martín (Toledo) (http://en.wikipedia.org/wiki/Puente_de_San_Mart%C3%ADn_%28Toledo%29), Spain 38 m

Nyons Bridge (http://en.wikipedia.org/wiki/Nyons_Bridge), France 40.53 m
Pont du Diable (Céret) (http://en.wikipedia.org/wiki/Pont_du_Diable_%28C%C3%A9ret%29), France 45.5 m
Castelvecchio Bridge (http://en.wikipedia.org/wiki/Castelvecchio_Bridge), Italy 48.7 m
Pont Grand (Tournon-sur-Rhône) (http://en.wikipedia.org/wiki/Pont_Grand_%28Tournon-sur-Rh%C3%B4ne%29), France 49.2 m

Pont de Vieille-Brioude (http://en.wikipedia.org/wiki/Pont_de_Vieille-Brioude), France 54.2 m

Trezzo sull'Adda Bridge (http://en.wikipedia.org/wiki/Trezzo_sull%27Adda_Bridge), Italy 72 m

This is what I have come up so far. Could you give more examples?

China's Zhaozhou bridge, or Anji Bridge, built in 595-605, has span of 37.37m. I'm not sure if it was a world record then, but most likely was.

For more details:
http://en.wikipedia.org/wiki/Zhaozhou_Bridge

Any more from China, or India for that matter?

Roman bridges reached clear spans of up to 40 m, but I left them out.

Any more from China, or India for that matter?

Roman bridges reached clear spans of up to 40 m, but I left them out.

why? they are premodern

Yes,certainly they are, but my list of Roman bridges is already fairly complete.

Don't know if it is in the right section, but I have to brag about the bridge that was the record holder... :tongue4:

Bridge of Apollodorus over the Danube was a Roman segmental arch 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 Greek architect Apollodorus of Damascus for the deployment of Roman troops in the war against Dacia.

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 Trajan as a supply route for the Roman legions fighting in Dacia.

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).

http://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Trajan%27s_Bridge_Across_the_Danube%2C_Modern_Reconstruction.jpg/800px-Trajan%27s_Bridge_Across_the_Danube%2C_Modern_Reconstruction.jpg

Don't know if it is in the right section, but I have to brag about the bridge that was the record holder... :tongue4:

Bridge of Apollodorus over the Danube was a Roman segmental arch 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 Greek architect Apollodorus of Damascus for the deployment of Roman troops in the war against Dacia.

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 Trajan as a supply route for the Roman legions fighting in Dacia.

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).

http://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Trajan%27s_Bridge_Across_the_Danube%2C_Modern_Reconstruction.jpg/800px-Trajan%27s_Bridge_Across_the_Danube%2C_Modern_Reconstruction.jpg


^^ If i remember the history lessons ... it has been built by the time of the emperor Adrian ...
Anyone knows if some ruins of it can be seen ?

^^ If i remember the history lessons ... it has been built by the time of the emperor Adrian ...
Anyone knows if some ruins of it can be seen ?
http://crampeiedinromania.files.wordpress.com/2009/08/img_8113.jpg?w=570&h=427

http://img263.imageshack.us/img263/23/15373518.jpg

http://img444.imageshack.us/img444/999/26426572.jpg

^^ If i remember the history lessons ... it has been built by the time of the emperor Adrian ...
Anyone knows if some ruins of it can be seen ?
Was Emperor Traian.

By ~1850 there where a few pillars still standing in the water, but they where destroyed for navigation purposes (no laws whatsoever for historic preservation then).