Dighi Industrial Smart City: Connectivity — Airports, Highways, Rail, Port & Metro Status

Roads and highways

The Dighi industrial smart city will benefit from its proximity to NH753F Mangaon-Pune and NH66 Mumbai-Goa national highways, as well as state highway 97. NICDC's own project page gives the more precise figure that Dighi Port Industrial Area (DPIA), located in Raigad District, Maharashtra, spans 6,056 acres and is strategically situated near Dighi Port, enhancing its connectivity, with the site offering access to NH-66 (10km).

The two named feeder roads that tie the DPIA parcels into NH66 are documented on Adani Ports' Dighi Port page: the Agardanda Terminal is connected via NH548A of approximately 44 km to the Mumbai-Goa Highway NH66 at Indapur, while the Dighi Terminal is connected via NH753F of approximately 55 km to the Mumbai-Goa Highway NH66 at Mangaon. A 2025 ministerial briefing described connectivity slightly differently, citing seamless connectivity via NH66, NH753F, and Major State Highway 05 — sources are not fully consistent on the state highway number (SH 97 vs. Major SH 5), so treat the state-highway designation as unconfirmed pending an official notification. As of September 2024, the project is expected to leverage the nearby Mumbai-Goa and Pune-Mangaon Highway to decongest both nearby urban centres of Mumbai and Pune.

Rail and Dedicated Freight Corridor

DPIA is well-connected via rail to key industrial regions like Kolad, Roha, Raigad and Mangaon, all Konkan Railway stations. NICDC states that the presence of the Konkan railway enhances the multimodal connectivity to the Dedicated Freight Corridor (DFC) and the Jawaharlal Nehru Port. This is a corridor-level link rather than a dedicated freight line built specifically for DPIA — no separate DFC spur into the DPIA site has been announced as of mid-2026.

Separately, Dighi Port itself (the seaport, ~55 km from the DPIA site) has its own rail-siding project: Dighi Port has received approval from the Ministry of Railways to develop the railway siding at the port under the 'Special Purpose Vehicle' (SPV) model, with Rail Vikas Nigam Ltd (RVNL) as a strategic partner holding a 26 percent stake. The port will be connected to the nearest railway head, Roha, which is 35 kms away.

Airports

Rail links to Kolad, Indapur, and Mangaon, and access to Mumbai Airport, Pune Airport, and the upcoming Navi Mumbai International Airport, further enhance its accessibility. Of these, the Navi Mumbai project has moved from "upcoming" to operational: on 8 October 2025 Prime Minister Modi inaugurated the first phase of the airport for public operations, and the airport started commercial operations on 25 December 2025. Initial services are operated by IndiGo, Air India Express, Akasa Air and Star Air, linking the new airport with key destinations across India, and round-the-clock operations are planned from February 2026, increasing to 34 daily departures. Mumbai's existing Chhatrapati Shivaji Maharaj International Airport and Pune Airport remain the other two air-connectivity references cited for DPIA, though neither is at the DPIA site itself — both are regional reference points roughly on the order of 100+ km away via NH66/NH753F.

Metro and RRTS proposals

No metro or Regional Rapid Transit System (RRTS) line has been proposed for the DPIA site itself in any of the current NICDC, DPIIT or state government material reviewed (as of July 2026). The only metro-related development in the wider region is around Navi Mumbai International Airport, over 100 km away, where the airport will be connected with Navi Mumbai Metro Line 1 and the future Gold Line (Line 8) of the Mumbai Metro, which has been approved by the government. That metro expansion serves the Mumbai Metropolitan Region's dual-airport system, not DPIA, and should not be read as connectivity for the Dighi industrial site.

Dighi Port and logistics

Dighi Port, the seaport that gives DPIA its name and rationale, changed ownership in 2021: Adani Ports and Special Economic Zone Limited completed the acquisition of Dighi Port Limited on 15 February 2021 for Rs 705 crore. The port currently handles bulk cargo — under Phase-I, five multipurpose berths will be developed, and currently the port is handling bauxite, coal and steel cargo on a regular basis — with total installed capacity in Phase-I of 30 million tonnes. A Multi-Modal Logistic Park (MMLP) is also on the drawing board: a Multi-Modal Logistic Park is proposed at Dighi, aimed at optimising freight and passenger movement, with backers expecting it to help reduce logistic costs from the current 14-16% to about 9%. No construction start date for the MMLP has been officially confirmed.

Internal road network and trunk infrastructure

Site-level infrastructure is being built out under the Maharashtra Industrial Township Limited (MITL), the SPV for the DPIA parcel. In February 2025, reporting on the project noted the Maharashtra Industrial Township Limited had begun work on the project spanning 2,450.83 hectares in Raigad district, with ₹1,505.35 crore to be invested in the first phase to build infrastructure, the first phase covering 1,000 hectares. Tendered works listed at that stage included cross drainage structures and bridges, tree plantations and fire safety systems, a water distribution network with reservoirs, industrial wastewater collection and recycling systems, stormwater drainage and power substations, and an electricity distribution network.

On overall timelines, DPIIT's Secretary said in September 2024 that the trunk infrastructure like road, power, utilities, treatment plants and ICT network will be ready in the next 3 years. Execution has since been contracted out: in early 2026, Ramky Infrastructure Limited entered into an agreement with MITL for EPC-based infrastructure works within DPIA Phase 1 under the Delhi Mumbai Industrial Corridor, with a total contract value of Rs 1,401.84 crore, inclusive of GST and O&M revenues, and the project has to be completed within 930 days from the appointed date, with an O&M period of four years from the commercial-operations date. This EPC scope covers utilities and internal roads for Parcel B rather than a separately named "internal road network," and no distinct DPIA road-grid map has been published publicly as of mid-2026.