Mumbai’s suburban railway network is set to get its longest tunnel, the 2.639-km Wavarle Tunnel (Tunnel-2), being built on the Panvel-Karjat corridor under the Mumbai Urban Transport Project Phase 3.

The tunnel is a key component of the 29.6-km double-line project aimed at easing congestion on the Central Railway, cutting travel time between Mumbai and Navi Mumbai-Raigad, and improving connectivity near the upcoming Navi Mumbai International Airport.