Tunneling completed for Kaneohe-Kailua gravity sewer project - Hawaii News Now - KGMB and KHNL

Tunneling completed for Kaneohe-Kailua gravity sewer project

(Image: Kaneohe-Kailua Gravity Sewer) (Image: Kaneohe-Kailua Gravity Sewer)
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  • Progress being made on gravity sewer tunnel between Kailua and Kaneohe

    Progress being made on gravity sewer tunnel between Kailua and Kaneohe

    Thursday, June 18 2015 12:56 PM EDT2015-06-18 16:56:25 GMT
    Thursday, June 18 2015 6:14 PM EDT2015-06-18 22:14:52 GMT
    City officials say after a month and a half of drilling, the Tunnel Boring Machine or TBM, is functioning well and on its 3-mile journey to create the underground space needed for the city to install Hawaii's first and largest gravity sewer line to run between the Kaneohe Waste Water Pre-Treatment Facility and the Kailua Regional Waste Water Treatment Plant. More >>
    City officials say after a month and a half of drilling, the Tunnel Boring Machine or TBM, is functioning well and on its 3-mile journey to create the underground space needed for the city to install Hawaii's first and largest gravity sewer line to run between the Kaneohe Waste Water Pre-Treatment Facility and the Kailua Regional Waste Water Treatment Plant. More >>
  • Kaneohe gravity tunnel halfway complete

    Kaneohe gravity tunnel halfway complete

    Wednesday, January 13 2016 12:40 AM EST2016-01-13 05:40:44 GMT
    Wednesday, January 13 2016 12:40 AM EST2016-01-13 05:40:44 GMT
    Entrance to the gravity tunnel.Entrance to the gravity tunnel.
    Honolulu Mayor Kirk Caldwell announced, on Tuesday the city's progress on a three mile gravity tunnel that will transport waste from Kaneohe to Kailua. More >>

    Honolulu Mayor Kirk Caldwell announced, on Tuesday the city's progress on a three mile gravity tunnel that will transport waste from Kaneohe to Kailua.

    More >>
  • Windward gravity sewer tunnel nearly half complete

    Windward gravity sewer tunnel nearly half complete

    Tuesday, January 12 2016 3:40 PM EST2016-01-12 20:40:58 GMT
    Tuesday, January 12 2016 3:40 PM EST2016-01-12 20:40:58 GMT
    The gravity sewer tunnel will convey wastewater flows from Kaneohe to Kailua while providing wastewater storage to help prevent overflows and spills, especially during storms. The overall project includes multiple parts: An approximately 3 mile-long gravity sewer tunnel from the Kaneohe WWPTF... More >>

    The gravity sewer tunnel will convey wastewater flows from Kaneohe to Kailua while providing wastewater storage to help prevent overflows and spills, especially during storms. The overall project includes multiple parts: An approximately 3 mile-long gravity sewer tunnel from the Kaneohe WWPTF...

    More >>
KANEOHE, OAHU (HawaiiNewsNow) -

The drilling for the tunnel of the Kaneohe-Kailua gravity sewer was completed on Tuesday.

The tunnel boring machine (TBM), nicknamed Pohakulani, finished the three mile excavation journey after 13 months.

With this, the first phase of the project concluded. The tunnel is designed to store waste water during heavy rains or backups to prevent overflows and spills for Kailua and Kaneohe.

The 10-foot wide sewer line will use gravity, rather than electricity, to transfer waste water from Kaneohe downhill to the Kailua plant.

Once finished, it will be Hawaii’s first and largest gravity sewer line to run between the Kaneohe Waste Water Pre-Treatment Facility and the Kailua Regional Waste Water Treatment Plant.

This project is also the city’s second largest construction project after the rail building campaign. It is expected to be complete in 2018.

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