The Old Naini Bridge is one of the longest and oldest bridges in India, located in Prayagraj. It is a double-decked steel truss bridge which runs across the Yamuna river in the southern part of the city.The bridge runs North-South across the Yamuna river connecting the city of Prayagraj to its neighborhood of Naini. It boasts capability of roadways and railways simultaneously. Upper deck has a two lane railway line which connects Naini Junction railway station to Allahabad Junction railway station, while the lower deck has successfully been facicilating roadway services since 1927.