This is my third German old bridge postcard. But I was luckier this time because I was able to find information about the bridge (German Wikipedia), and the current picture of the bridge. I'd prefer the old bridge. Too bad it was destroyed during WWII.
Mainz-Gustavsburger Eisenbahnbrücke Postcard
The Mainz South Bridge (also called Mainz-Gustavsburger Eisenbahnbrücke or Mainz-Gustav Local Railway Bridge) was built from 1860 - 1862, and combines part of the Rhine-Main railway and the main railway Mainz with Gustav's castle.
The original bridge had four major lens makers, including Pauli carrier (after the engineer Friedrich August von Pauli), followed by a long right-flood bridge with 31 other fields of views. Both bridge-heads was built with bridge towers that would defend the bridge in case of a war.
Location: Mainz-old town - Ginsheim-Gustavsburg
Use: Eisenbahnbrücke (Railway Bridge)
Construction: 1860 - 1862
Architect: Gottfried Heinrich Gerber
Construction: Pauli makers (including lens makers)
Length: 1028 m
Width: 12.6 m
Height: 9 m
Building materials: Steel, stone
Spans: 106.6 - 105.6 - 105.6 - 106.6 m.
The South Bridge was destroyed during the Second World War. The bridge with two adjacent K-steel truss beams, each 12 m high and 424 metres long on common pillars, was rebuilt. Today there are only the western bridge towers.