₹23,000 Crore Mumbai Metro Line 8 (Gold Line) Project To Connect Mumbai And Navi Mumbai Airports

The City and Industrial Development Corporation (CIDCO) has formally submitted the Detailed Project Report (DPR) for Mumbai Metro Line 8 - also known as the Gold Line - to the Maharashtra government for evaluation and approval. The ambitious corridor aims to provide a seamless high-speed link between Chhatrapati Shivaji Maharaj International Airport (CSMIA) in Mumbai and the upcoming Navi Mumbai International Airport (NMIA), covering a total length of 34.89 km.

Key Features and Route Details

The proposed Gold Line will feature 20 stations - 14 elevated and 6 underground - along key stretches connecting major localities such as Kurla, Lokmanya Tilak Terminus (LTT), Mankhurd, Vashi, Nerul, and Seawoods before reaching NMIA. Once operational, the travel time between the two airports will drop significantly - from nearly 1.5 hours by road to just 40-45 minutes.

The project, color-coded as the Gold Line, forms an essential part of Mumbai's expanding metro network designed to improve connectivity across the Mumbai Metropolitan Region (MMR). According to CIDCO, the corridor is expected to handle an estimated ridership of 1.03 million passengers daily by 2031.

Project Cost, Funding, and Approvals

The estimated cost of Metro Line 8 stands at ₹23,000 crore. It will be developed under a Public-Private Partnership (PPP) model, with 20% viability gap funding (VGF) each contributed by the state and central governments, while the remaining amount will be invested by a private partner on a build-operate-transfer (BOT) basis.

The DPR will first undergo scrutiny by the state cabinet, after which it will be sent to the Public Investment Board for evaluation. The final approval will come from the Union Cabinet, following which construction work is expected to begin.

A Step Toward Integrated Transport Vision

The Gold Line is envisioned as a major infrastructure milestone for Mumbai, enhancing connectivity between two major airports while alleviating congestion on arterial roads such as the Eastern Express Highway and Sion-Panvel Highway. The corridor will also integrate with six other metro lines, the suburban railway system, and multiple bus routes, strengthening Mumbai's multi-modal transport framework.

Once implemented, Metro Line 8 will mark a significant stride toward achieving Mumbai's integrated transport vision, positioning the city as a global aviation and financial hub with world-class connectivity.