National Highway 57 (India, old numbering)
Former National Highway 57 linked Muzaffarpur to  Purnea in the Indian state of Bihar. It was  long. In 2010 the national highway numbering system was rationalized and renumbered. The entire stretch of the old national highway 57 is now part of new National Highway 27. Route
This former national highway passed through Muzaffarpur, Darbhanga, Muria, Supaul, Narahia, Narpatganj, Forbesganj, Araria, Jhanjharpur and Purnia. 