High Quality Content by WIKIPEDIA articles! National Highway 54 (NH 54) is a 850 km (530 mi) long National Highway in the Northeastern Indian states of Assam and Mizoram. NH 54 begins in Dabaka, Assam at the intersection of NH 36 and generally runs southward passing through Lumding, Silchar and Mizoram state capital Aizwal before terminating at Tuipang in Mizoram.