KAILUA, Hawaii - The tunnel boring machine called "Pohakulani" is expected to complete its 3-mile journey from Kailua to Kaneohe on Tuesday in an underground sewer tunnel.  The "Pohakulani" drilled through rock 62 feet under ground.  

The machine began its three-mile journey 13 months ago.

The route links the Kailua Regional Wastewater Treatment Plant to the Kaneohe Wastewater Treatment Plant.