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Cannon Street Railway Bridge
River Thames, east of Southwark Bridge, London
Cannon Street Railway Bridge
associated engineer
Sir John Hawkshaw
date  1863 - 1866
era  Victorian  |  category  Bridge  |  reference  TQ324806
ICE reference number  HEW 2251
photo  National Maritime Museum, Flickr photostream
In 1861, the South Eastern Railway Company was responsible for the trains running into London Bridge Station. They wanted to extend their line across the Thames so that trains could reach the City of London.
In that year, they obtained permission to do this, and set about building Cannon Street Railway Bridge, which takes the line to Cannon Street Station on the north bank. The bridge was designed by Sir John Hawkshaw, then engineer to the South Eastern Railway. Construction began in 1863.
Each pier of the bridge consists of four cast iron cylinders sunk through the river bed to the London Clay below. Each is filled with concrete to the level of the bed and then lined with brickwork above. The cylinders are shaped like Doric columns all are fluted and the outer ones have Doric capitals.
The spanning part of the bridge is made of horizontal wrought iron plate girders, each 2.5m high. The two outer girders have double web plates.
In 1886-93, the bridge was widened by the addition of two further cylinders to each pier on the western side. Further work was done in 1910-13, when the bridge was strengthened to carry heavier class locomotives.
In the early 1980s, the bridge underwent major strengthening work, which included pressure grouting to fill the voids between the inner surface of the iron cylinders and the the brick lining, the addition of reinforced concrete collars at the top of the cylinders, and the replacement of the original wrought iron crossheads with reinforced concrete beams.
reference sources   CEH Lond

Cannon Street Railway Bridge