evidence: - Length: It is the longest highway tunnel in India, covering a distance of nine kilometers. [...] Confusion Points - Chenani-Nashri Tunnel Renaming: The Chenani-Nashri Tunnel in J&K has been renamed the Shyama Prasad Mukherjee Tunnel. - Longest Road Tunnel: The Shyama Prasad Mukherjee Tunnel (Chenani-Nashri Tunnel) is mentioned as the longest road tunnel in India, covering 9.28 km. It ensures all-weather connectivity, even during harsh winter weather.