The small patch is a part of the 84-km Jiribam-Tupul broad gauge project, the foundation of which was laid by the PM in 2004. So far, Manipur had only 1.5km rail tracks up to Jiribam station near the Assam border.
Villagers lined up along the newly-constructed railway line, which runs through hills, and expressed their happiness by waving at the engine.
The Manipur government is set to treat the route as the lifeline of the state given the uncertain road links due to frequent economic blockades.
The Railways completed the task in spite of severe law and order problems in the area, said deputy chief engineer (construction), Jiribam, S P Deshmukh.