High Quality Content by WIKIPEDIA articles! National Highway 52 (NH 44) is a National Highway in the Northeastern Indian states of Assam and Arunachal Pradesh. NH 52 starts at the intersection of NH 31 north of Guwahati and generally traverses east and northeast. It runs for a distance of 850 km (530 mi), of which 540 km (340 mi) is in Assam and the rest in Arunachal Pradesh.