Mahatma Gandhi Setu, the longest single river bridge in Asia, is build across the River Ganges at Patna in Bihar state, India. This bridge connects Patna in south and Hajipur in north in Bihar. This was opened to public in the year 1982 and its length is 5450 metres. Also known as Ganga Setu, it is a part of National Highway 19.

Indian postal department issued a commemorative postage stamp on Landmark Bridges of India: MAHATMA GANDHI SETU of denomination 0500 Paise on August 17th, 2007.