Earlier, Indian Defense Forces had laid the Bailey bridge over the Diffo Rrver. It was a temporary structure that had to be closed during most rains. The new bridge provides uninterrupted access between Dibang Valley and Lohit valley of Eastern Arunachal Pradesh on Roing-Koron-Paya Road. Lohit valley is the corridor that leads to Kibithu, the battleground of the 1962 Indo-Sino war and Lower Dibang Valley leads to the Anini front of border with China. The bridge reduced traveling time between Tezu and Roing (district headquarters of Lohit Valley and Lower Dibang Valley respectively) from 3 hours to 45 minutes. During a monsoon, the old route took travelers through Assam. Strategically, it provides an all-weather route for troops deployed on the China border (the McMahon line).