Upper Sone Bridge, Dehri

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The Upper Sone Bridge, Dehri was part of East Indian Railway's 'Grand Chord Line'. The bridge crosses the River Sone at Dehri-on-Sone, about halfway between Moghal Serai and Gayaon the ‘East Indian Railway’(EIR). It carries a double broad gauge(BG) line.

The Government finally authorised the ‘Grand Chord’project in 1895 and construction commenced. The major works on the line were the ‘Upper Sone Bridge’, tunnelling and ghat line construction [1].The

The ‘Upper Sone Bridge’ opened on 27 Feb 1900. The total length of the Upper Soane Bridge across the Soane, (as the river was then called), over abutments is 3,064 metres (10,052 ft). When it was built, it was the longest bridge in India and was believed to be the second longest bridge in the world [2].

Design and Construction

Upper Sone Bridge

The Engineers for this bridge were the Rendel, Palmer and Tritton Partnership[3].

The bridge consists of 93 openings, each of 100 foot(30.5mtr) clear and there are two complete separate sets of girders supported on the same piers. One of these sets was supplied by Dorman Long, Middlesbrough, England. This set was of the deck type, each span weighing approx 95 tons, giving a total weight of nearly 9000 tons. The bearings were at 105 foot (32mtr) centres[3] and a total length of 10,052 feet (3km) [2]

Alexander Meadows Rendel was the EIR Consulting Engineer [4] and was responsible for the construction of the ‘Upper Sone Bridge’ which was completed in 1900 [2].

Frederick Palmer was the EIR District Engineer on surveys and construction. He was responsible for the construction of the line, which was commenced in 1896 and completed in 1900, and included the ‘Upper Sone Bridge’,the longest bridge in India [5].