The construction of the Sela Tunnel, located between the Tawang and West Kameng districts, is expected to be completed by June 2022 ahead of its scheduled deadline of August 2022.

https://www.timesnownews.com/india/article/to-step-up-security-on-border-with-china-india-building-world-s-longest-bi-lane-road-tunnel-above-13000-ft/825735