NE-4 Route Details

NE-4 crosses three distinct landscapes on its way from Delhi to Mumbai, and the engineering changes with the terrain. Leaving Delhi and Haryana, the road climbs briefly through the Aravalli foothills before dropping into the Rajasthan desert, where it threads through — rather than around — four tiger reserves: Ranthambore, Sariska, Mukundara Hills, and Ramgarh Vishdhari. Five dedicated wildlife crossings and a tunnel through the Mukundara Hills were built specifically so the highway wouldn't fragment these habitats, a design constraint that shaped the alignment through this entire stretch.

Past Kota, the road climbs onto the Malwa Plateau in Madhya Pradesh — flatter, more agricultural terrain that let this section be built and opened as a single continuous 244 km stretch faster than almost anywhere else on the corridor. Entering Gujarat, NE-4 crosses the Narmada River on what's described as India's longest extradosed cable-stayed bridge, before threading through the state's dense industrial belt around Vadodara, Bharuch, and Surat — arguably the busiest freight corridor the expressway touches anywhere along its length.

The final stretch into Maharashtra is the most constrained: rather than driving straight into central Mumbai, NE-4 arcs east around the metropolitan region through Thane district before splitting toward its two southern termini — JNPT port and Virar — a routing shaped by land availability and the need to serve the port directly rather than by the shortest possible line on a map.