TheHowrah–Prayagraj–Mumbai line, (formerly known asHowrah–Allahabad–Mumbai line)[importance?] is a railway line connectingKolkata andMumbai viaPrayagraj (formerly Allahabad). The 2,160-kilometre-long (1,340 mi) railway line was opened to traffic in 1870. This railway line was 2,146 kilometres (1,333 mi) long until 2004. In 2004 the construction ofIndira Sagar Dam submerged the old alignment nearKhandwa and a new alignment of 14 kilometres (8.7 mi) long was relaid.
For more detailed study the cross-country line has been divided into smaller sections:
The first train in India traveled from Bombay toThane on 16 April 1853. By May 1854,Great Indian Peninsula Railway's Bombay–Thane line was extended toKalyan. It was extended toKhopoli via Palasdhari in 1855.Bhusawal station was set up in 1860 andPune connected in 1863. In Eastern India, construction of theHowrah–Delhi main line was completed and through connection between Delhi and Kolkata was established in 1865. The last link was the bridge across theYamuna atPrayagraj. In 1866 Bhusawal-Khandwa section was opened and GIPR also extended its operations toNagpur.East Indian Railway, which had established the Howrah–Allahabad–Delhi line, opened the Allahabad–Jabalpur branch line in June 1867. GIPR connection over the Thull Ghat reached Jabalpur fromItarsi on 7 March 1870, linking up with EIR track there from Allahabad, and establishing connectivity between Mumbai and Kolkata.[1][2]
TheBengal Nagpur Railway was formed in 1887 for the purpose of upgrading theNagpur Chhattisgarh Railway and then extending it viaBilaspur toAsansol, in order to develop a shorter Howrah–Mumbai route than the one via Allahabad.[3] The Bengal Nagpur Railway main line from Nagpur to Asansol, on theHowrah–Delhi main line, was opened for goods traffic on 1 February 1891.[4] It was only afterKharagpur was linked from the west and the south that it was connected to Howrah in 1900.
The opening of this track was part of the inspiration for the French writerJules Verne's bookAround the World in Eighty Days. At the opening ceremony, the ViceroyLord Mayo concluded that "it was thought desirable that, if possible, at the earliest possible moment, the whole country should be covered with a network of lines in a uniform system."
In August 1976, the New Delhi–Howrah route (viaGrand Chord), and that includes the Howrah–Allahabad section of the Howrah–Allahabad–Mumbai line, was the first trunk route in the country to be completely electrified with AC traction. Electrification of Itarsi - Jabalpur - Allahabad was proposed in Railway Budget of 2011. The entire route was divided into sections and electrification was completed in parts. In March 2020, electrification of last remaining stretch betweek Katni Jn. and Satna was also done, thereby the Howrah Allahabad Mumbai route became completely electrified.[5]
Most of theHowrah–Gaya–Delhi line andHowrah–Bardhaman chord (the line is common with this line up to Allahabad) is classified as 'A' class line where trains can run up to 160 kilometres per hour (99 mph) but in certain sections speeds may be limited to 120–130 kilometres per hour (75–81 mph). The line from Bhusawal to Mumbai is also classified as 'A' class. The Allahabad–Bhusawal sector is classified as 'B' class where trains can run up to 130 km/h.[6]
TheImperial Indian Mail (now called 12321 up /12322 down Howrah–Mumbai Mail via Jabalpur), running on this route, was possibly the firstnamed train of Indian Railways. The Mumbai–Howrah Mail via Allahabad is calledCalcutta Mail between Mumbai and Allahabad, andMumbai Mail (some still call it by its old name,Bombay Mail) between Allahabad(Now Prayagraj) and Howrah. It is still running for 151 years as the oldest active train on this route covering 2,160-kilometre-long (1,340 mi) distance in 37 hours and 30 mins with an average running speed of 57.6 kilometres per hour (35.8 mph) .[7][8]
The Kolkata–Mumbai linkage, along with other events, inspired the French writerJules Verne to write his bookAround the World in Eighty Days.[9]
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 Howrah Mumbai Mail speeding through the Gangetic plains |
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