Sri Lanka, July 15 -- The excavation of South Asia's longest irrigation tunnel, a key component of Sri Lanka's ambitious North Central Canal Project, which successfully completed will be commissioned today (15), marking a major milestone in the country's largest water security initiative.

The 27.7-kilometre-long irrigation tunnel, constructed under the Mahaweli Water Security Investment Program (MWSIP) with financial assistance from the Asian Development Bank (ADB), achieved its engineering "breakthrough" when two state-of-the-art Tunnel Boring Machines (TBMs) met underground after excavating from opposite directions.

The Tunnel Boring Machines (TBMs) and the construction siteThe Tunnel Boring Machines (TBMs) and the construction site O...