The Howrah Bridge is a balanced Steel bridge over the Hooghly River in West Bengal, India. Commissioned in 1943,[9][11] the bridge was originally named the New Howrah Bridge, because it replaced a pontoon bridge at the same location linking the cities of Howrah and Kolkata, which are located at the opposite banks of each other. On 14 June 1965, it was renamed Rabindra Setu after the Bengali poet Rabindranath Tagore, who was the first Indian and Asian Nobel laureate.[11] It is still popularly known as the Howrah Bridge.
The bridge is one of four on the Hooghly River and is a famous symbol of Kolkata and West Bengal. The other bridges are the Vidyasagar Setu (popularly called the Second Hooghly Bridge), the Vivekananda Setu and the relatively new Nivedita Setu. It carries a daily traffic of approximately 100,000 vehicles[12] and possibly more than 150,000 pedestrians,[10] easily making it the busiest cantilever bridge in the world.[13] The third-longest cantilever bridge at the time of its construction,[14] the Howrah Bridge is currently the sixth-longest bridge of its type in the world.[15]
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Bullock carts formed the eight - thirteenths of the vehicular traffic (as observed on 27 August 1906, the heaviest day's traffic observed in the port of Commissioners 16 days' Census of the vehicular traffic across the existing bridge). The roadway on the existing bridge is 48 feet wide except at the shore spans where it is only 43 feet in roadways, each 21 feet 6 inches wide. The roadway on the new bridge would be wide enough to take at least two lines of vehicular traffic and one line of trams in each direction and two roadways each 30 feet wide, giving a total width of 60 feet of road way which are quite sufficient for this purpose [...]
The traffic across the existing floating bridge Calcutta & Howrah is very heavy and it is obvious if the new bridge is to be on the same site as the existing bridge, then unless a temporary bridge is provided, there will be serious interruptions to the traffic while existing bridge is being moved to one side to allow the new bridge to be erected on the same site as the present bridge.
The initial construction process of the bridge was stalled due to World War I, although the bridge was partially renewed in 1917 and 1927. In 1921 a committee of engineers named the 'Mukherjee Committee' was formed, headed by R. N. Mukherji, Sir Clement Hindley, chairman of Calcutta Port Trust and J. McGlashan, Chief Engineer. They referred the matter to Sir Basil Mott, who proposed a single span arch bridge.[9] Charles Alfred O'Grady one of the Engineers
In 1922, the New Howrah Bridge Commission was set up, to which the Mukherjee Committee submitted its report. In 1926 the New Howrah Bridge Act passed. In 1930 the Goode Committee was formed, comprising S.W. Goode as president, S.N. Mallick, and W.H. Thompson, to investigate and report on the advisability of constructing a pier bridge between Calcutta and Howrah. Based on their recommendation, M/s. Rendel, Palmer and Tritton were asked to consider the construction of a suspension bridge of a particular design prepared by their chief draftsman Mr. Walton.[9] On basis of the report, a global tender was floated. The lowest bid came from a German company, but due to increasing political tensions between Germany and Great Britain in 1935, it was not given the contract.[8] The Braithwaite, Burn & Jessop Construction Co. was awarded the construction contract that year. The New Howrah Bridge Act was amended in 1935 to reflect this, and construction of the bridge started the next year.[9]
By the end of 1940, the erection of the cantilevered arms was commenced and was completed in mid-summer of 1941. The two halves of the suspended span, each 282 feet (86 m) long and weighing 2,000 tons, were built in December 1941. The bridge was erected by commencing at the two anchor spans and advancing towards the center, with the use of creeper cranes moving along the upper chord. 16 hydraulic jacks, each of which had an 800-ton capacity, were pressed into service to join the two halves of the suspended span.[14]
When commissioned in 1943, Howrah was the 3rd-longest cantilever bridge in the world,[14] behind Pont de Qubec (549 metres (1,801 ft)) in Canada and Forth Bridge (521 metres (1,709 ft)) in Scotland. It has since been surpassed by three bridges, making it the sixth-longest cantilever bridge in the world in 2013. It is a suspension type balanced cantilever[5] bridge, with a central span 1,500 feet (460 m) between centers of main towers and a suspended span of 564 feet (172 m). The main towers are 280 feet (85 m) high above the monoliths and 76 feet (23 m) apart at the top. The anchor arms are 325 feet (99 m) each, while the cantilever arms are 468 feet (143 m) each.[7] The bridge deck hangs from panel points in the lower chord of the main trusses with 39 pairs of hangers.[5] The roadways beyond the towers are supported from ground, leaving the anchor arms free from deck load. The deck system includes cross girders suspended between the pairs of hangers by a pinned connection.[7] Six rows of longitudinal stringer girders are arranged between cross girders. Floor beams are supported transversally on top of the stringers,[7] while themselves supporting a continuous pressed steel troughing system surfaced with concrete.[5]
The longitudinal expansion and lateral sway movement of the deck are taken care of by expansion and articulation joints. There are two main expansion joints, one at each interface between the suspended span and the cantilever arms and there are others at the towers and at the interface of the steel and concrete structures at both approach.[5] There are total 8 articulation joints, 3 at each of the cantilever arms and 1 each in the suspended portion. These joints divide the bridge into segments with vertical pin connection between them to facilitate rotational movements of the deck.[5] The bridge deck has longitudinal ruling gradient of 1 in 40 from either end, joined by a vertical curve of radius 4,000 feet (1,200 m). The cross gradient of deck is 1 in 48 between kerbs.[5]
The bridge serves as the gateway to Kolkata, connecting it to the Howrah Station, which is one of the five intercity train terminus stations serving Howrah and Kolkata. As such, it carries the near entirety of the traffic to and from the station, taking its average daily traffic close to nearly 150,000 pedestrians and 100,000 vehicles.[10] In 1946, a census of the daily traffic was taken, which counted 27,400 vehicles, 121,100 pedestrians and 2,997 cattle.[13] The bulk of the vehicular traffic comes from buses and cars. Prior to 1993, the bridge also carried trams. Trams departed from the terminus at Howrah station towards Sealdah, Rajabazar, Shyambazar, High Court, Dalhousie Square, Park Circus, Ballygunge, Tollygunge etc. In 1993, tram service on the bridge was discontinued due to the increasing load on the structure. However, the bridge still continues to carry much more than the expected load. A 2007 report revealed that nearly 90,000 vehicles were plying on the bridge daily (15,000 of which were goods-carrying), though its load-bearing capacity is only 60,000.[23] One of the main reasons for the overloading was that, although vehicles carrying up to 15 tonnes are allowed on the structure, vehicles with 12-18 wheels and carrying loads up to 25 tonnes often plied on it. From 31 May 2007 onwards, overloaded trucks were banned from crossing the bridge and were redirected to the Vidyasagar Setu instead.[24] The road is flanked by footpaths 15 feet (4.6 m) wide, which are thronged with pedestrians.[5]
The bridge has been shown in numerous films, such as Bimal Roy's 1953 film Do Bigha Zamin, Ritwik Ghatak's Bari Theke Paliye in 1958, Satyajit Ray's Parash Pathar in the same year, Mrinal Sen's Neel Akasher Neechey in 1959, Shakti Samanta's Howrah Bridge (1958), that featured the famous song Mera Naam Chin Chin Chu and China Town (1962) and Amar Prem (1971), Amar Jeet's 1965 Teen Devian in 1965, Mrinal Sen's 1972 National Award winning Bengali film Calcutta 71 and Sen's Calcutta Trilogy its sequel in 1973, Padatik, Richard Attenborough's 1982 Academy Award winning film Gandhi, Goutam Ghose's 1984 Hindi film Paar, Raj Kapoor's Ram Teri Ganga Maili in 1985, Nicolas Klotz's The Bengali Night in 1988, Roland Joff's English language film City of Joy in 1992, Florian Gallenberger's Bengali film Shadows of Time in 2004, Mani Ratnam's Bollywood film Yuva in 2004, Pradeep Sarkar's 2005 Bollywood film Parineeta, Subhrajit Mitra's 2008 Bengali film Mon Amour: Shesher Kobita Revisited, Mira Nair's 2006 film The Namesake, Blessy's 2008 Malayalam Film Calcutta News, Surya Sivakumar's 2009 Tamil film Aadhavan, Imtiaz Ali's 2009 Hindi film Love Aaj Kal, Abhik Mukhopadhyay's 2010 Bengali film Ekti Tarar Khonje, Sujoy Ghosh's 2012 Bollywood film Kahaani, Anurag Basu's 2012 Hindi film Barfi!, Riingo Banerjee's 2012 Bengali film Na Hannyate, Rana Basu's 2013 Bengali film Namte Namte, and Ali Abbas Zafar's 2014 Hindi film Gunday and the 2015 YRF release from director Dibakar Banerjee's Detective Byomkesh Bakshy!. Shoojit sircar's "Piku" also features some scenes on this iconic bridge. The bridge was also featured in Garth Davis' Academy Award-nominated 2016 film Lion. Anvita Dutt's 2022 movie Qala (film) features some fictional scenes of Howrah Bridge's construction.
Because of the world war, Britishers realized the immense necessity for a more permanent steel girder bridge. The pontoon bridge was a floating type it rested on pontoons (hollow metallic cylinders) floating on water. Although it outlasted its worthiness and was still going well until dismantled. The New Howrah Bridge was commissioned in 1943 and again renamed in 1965 as Rabindra Sethu Bridge. In honour of the famous Bengali poet and Nobel Laureate Rabindranath Tagore. Today it is an iconic landmark of Kolkatta. 2351a5e196
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