The Bangladesh Bridge Authority has announced that traffic through the Karnaphuli Tunnel will be controlled between June 25 and 30, 2026, due to scheduled routine maintenance. The diversion will take place nightly from 11 p.m. to 5 a.m., with traffic redirected as needed between the Patenga-to-Anwara and Anwara-to-Patenga tubes. During this period, passengers may experience waiting times of five to ten minutes at both ends of the tunnel depending on traffic volume.

The authority has requested public cooperation to ensure safe and efficient maintenance operations. The temporary diversion aims to facilitate necessary upkeep of the tunnel infrastructure while minimizing disruption to regular traffic flow.

The maintenance work underscores ongoing efforts by the Bangladesh Bridge Authority to maintain the safety and functionality of key national infrastructure such as the Karnaphuli Tunnel.