NHAI Installs Noise Barriers on Kerala Elevated Highway

14 Jan 2026 CW Team

The elevated corridor is being constructed directly above the existing four-lane road without additional land acquisition, bringing it close to densely populated residential areas, multi-storeyed buildings, schools and hospitals. Given the proximity to sensitive zones, NHAI decided to install noise barriers to mitigate the impact of traffic noise on surrounding communities, a senior official said.

The barriers, made of translucent polycarbonate material, are designed to reduce traffic noise—mainly from vehicle horns and engines—by 10 to 15 decibels. Measuring 1.8 metres in height, they are being installed above boundary walls that are approximately 4 metres tall, along the outer edges of the elevated highway.

Installation work has commenced on the Thuravoor–Kuthiathode stretch. Officials said the measure is expected to help reduce health risks associated with prolonged exposure to noise pollution. The technology has already been implemented successfully in other parts of the country, including Delhi, ensuring that increased traffic capacity does not come at the cost of residents’ quality of life.

In another first for the state, NHAI has also started developing a dedicated cycle track beneath the country’s longest single-pillar elevated corridor. Built atop the utility corridor below the main elevated deck, the track will offer a safe and exclusive space for cyclists. Beginning near the Thuravoor end, the facility marks the first time NHAI has integrated cycling infrastructure into a major highway project in Kerala.

NHAI plans to open a 5 km elevated stretch between the Aroor and Chandiroor ramps by March. The entire elevated highway is scheduled for completion by the revised deadline of June 30.

Meanwhile, residents have welcomed initiatives such as the noise barriers but have urged authorities to immediately restore roads in areas where construction work has already been completed.

In a first for Kerala, the National Highways Authority of India has begun installing noise barriers along both sides of the 12.75 km Aroor–Thuravoor elevated highway, which is expected to be fully opened to traffic by the middle of this year. The elevated corridor is being constructed directly above the existing four-lane road without additional land acquisition, bringing it close to densely populated residential areas, multi-storeyed buildings, schools and hospitals. Given the proximity to sensitive zones, NHAI decided to install noise barriers to mitigate the impact of traffic noise on surrounding communities, a senior official said. The barriers, made of translucent polycarbonate material, are designed to reduce traffic noise—mainly from vehicle horns and engines—by 10 to 15 decibels. Measuring 1.8 metres in height, they are being installed above boundary walls that are approximately 4 metres tall, along the outer edges of the elevated highway. Installation work has commenced on the Thuravoor–Kuthiathode stretch. Officials said the measure is expected to help reduce health risks associated with prolonged exposure to noise pollution. The technology has already been implemented successfully in other parts of the country, including Delhi, ensuring that increased traffic capacity does not come at the cost of residents’ quality of life. In another first for the state, NHAI has also started developing a dedicated cycle track beneath the country’s longest single-pillar elevated corridor. Built atop the utility corridor below the main elevated deck, the track will offer a safe and exclusive space for cyclists. Beginning near the Thuravoor end, the facility marks the first time NHAI has integrated cycling infrastructure into a major highway project in Kerala. NHAI plans to open a 5 km elevated stretch between the Aroor and Chandiroor ramps by March. The entire elevated highway is scheduled for completion by the revised deadline of June 30. Meanwhile, residents have welcomed initiatives such as the noise barriers but have urged authorities to immediately restore roads in areas where construction work has already been completed.

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