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near Allahabad, over the Jumna River.
The Old Naini Bridge is a double-decked steel truss bridge which runs across the Yamuna (Jumna) river in the southern part of the city.
The bridge runs North-South across the Yamuna river connecting the city of Allahabad to its neighbourhood of Naini. It was built for the East Indian Railway. It is a double-decker road and railway bridge. The upper deck has a double track railway line which connects Naini Junction railway station to Allahabad Junction railway station, while the lower deck has been used as a road since 1927.
The bridge has fourteen spans of 200 feet each and three small openings of 30 feet and originally carried a cart road below. The piers are 60 feet above low water are founded on twelve brick wells each 13 feet 6 inches in diameter sunk to a depth of 42 feet below low water. The length of the bridge is 2,640 ft.
1865 Opened on August 15th. 1860s photo here.
Evidently the girders were replaced in 1928-9.
The main Naini Road Bridge is a modern cable-stayed bridge.