A crucial route under the junction of three rivers in Assam's Chirang district has been finished, ending the micro-tunnelling for the GAIL-run Barauni-Guwahati gas pipeline project.

As part of the Pradhan Mantri Urja Ganga project, tunnelling under the confluence of the Kanamakra, Aie, and Manas rivers for the Gas Pipeline has been completed.

The break-through of the micro-tunnel boring machine was achieved by Ace Energy Infrastructure Pvt Ltd, a part of the Mumbai-based Ace Pipeline Group, on July 2, the release said.

Ace Energy has completed construction of a tunnel of diameter 1600 mm across 1200 m at a depth of 11-12 meters under the river bed. The river is flowing up to its brim for the past three months owing to the flooding in its upper reaches in Bhutan, the release said.