HG Infra Engineering Limited and Kalpataru Projects International Limited received the LOA on 10 December 2025 for the Design and Construction of a 20.527-km Elevated Metro Viaduct between the UG Ramp and Balkum Naka in Thane. The joint venture includes the Depot Approach Viaduct and three special spans, with HGINFRA at 40% and Kalpataru at 60%.