In a pioneering step toward eco-sensitive infrastructure, the National Highways Authority of India (NHAI) has developed the country's first dedicated wildlife corridor along a 12-km stretch of the Delhi-Mumbai Expressway. This segment, running through the buffer zone of the Ranthambore Tiger Reserve, integrates five dedicated overpasses and India’s longest underpass to facilitate the safe movement of wildlife.

This marks the first instance of an Indian expressway being designed with a dual objective—supporting high-speed connectivity while ensuring the conservation and protection of wildlife habitats. The corridor was planned in consultation with the Wildlife Institute of India and the Ministry of Environment, Forest and Climate Change. It lies in an ecologically rich zone between the Ranthambore National Park and the Chambal Valley, home to species like tigers, bears, and antelopes.

Key features include five 500-mtrs.-long overpasses, a 1.2-km underpass for large mammals, and nearly five km of road built at elevations or below ground to preserve the natural landscape. Additionally, four-mtrs.-high boundary walls and sound barriers were installed to reduce disturbance and prevent animal-road interaction. Notably, no wildlife casualties occurred during construction, thanks to strict monitoring and mitigation efforts.