NHAI Reused 63 Million Tonnes of Waste for Roads

17 Jul 2025 CW Team

The National Highways Authority of India (NHAI) reused over 63 million tonnes of waste materials in constructing highways during 2023–24, marking a significant shift toward more sustainable infrastructure development.

NHAI constructed 6,634 km of highways in the year—a 20 per cent increase over the previous fiscal. Despite the rise in activity, greenhouse gas emissions fell from 1.0 to 0.8 metric tonnes of CO₂ per km, indicating cleaner and more environmentally responsible construction methods.

Materials such as fly ash, pond ash, plastic waste, and reclaimed asphalt were utilised as alternatives to virgin raw materials, reducing pollution and conserving resources. NHAI also mandates the use of fly ash in road projects located near power plants.

In line with its green initiatives, NHAI planted 5.6 million trees in 2023–24 and a further 6.75 million in 2024–25. Water consumption in arid regions was cut by 74 per cent through efficient usage practices.

Plastic waste is being repurposed for road construction in states including Delhi, Tamil Nadu, Kerala, and along sections of NH-48. Approximately 7 tonnes of plastic are reused for each kilometre of four-lane highways, diverting plastic waste from landfills and the environment.

Union Minister Nitin Gadkari remarked, “Sustainability is now integral to road building. NHAI uses recycled materials, builds solar plants, conserves rainwater, and safeguards biodiversity.”

With lower emissions, longer-lasting roads, and improved environmental outcomes, India is progressing steadily towards green and smart highway infrastructure.

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