NHAI to conduct intensive soil testing across 378 RS wall locations in Kerala

Key Points

1. NHAI launched geotechnical investigation across NH-66 expansion project in Kerala after RS wall collapse.
2. 18 geotechnical agencies employed to perform soil sampling at 378 RS wall locations.
3. Tests to be completed at 100 locations within the first month and entire assessment within three months.
4. RS wall collapse at Mylakkadu linked to deep-seated shear or bearing capacity failure.
5. Expert team including members from IIT-Kanpur and IIT-Palakkad investigated the Mylakkadu failure.
6. RITES to conduct safety audit on NH-66 projects following Aroor-Thuravoor incident.
7. NHAI will re-check design and construction of every RS wall based on investigation reports.