Old Dominion Electrical Cooperative Wildcat Intake
Campbell River Water Supply Intake
A new water intake from a nearby lake installed at a 45-foot depth delivers fresh water to the City of Campbell River. Permalok casing pipe installed via microtunneling houses a 380’ HDPE pipeline.
Gunnuk Creek Hydro Electric Penstock
The inherent strength of steel proved a natural choice for this remote Alaskan hydro penstock project. We manufactured engineered pipe in long self-supporting lengths that could be cantilevered one at a time to reach the supporting above-ground piers.
Ellwood Water Treatment Plant
Used as the carrier pipe to encase both a water line and a utility line for this water treatment plant project, Permalok pipe’s ability to support continuous tunneling, as opposed to the ‘stop and weld’ helped this project finish on an expedited schedule.
Homestake Suction Pipeline Replacement
Using a sliplining application, steel pipe replaces sections of an aging concrete water system through the rough terrain of the Continental Divide.
Kearney Lake Road Slipline
An Innovative joint proves successful in critical sprialweld steel pipe slipline project to rehabilitate a deteriorating PCCP water main. The result is a structurally independent system with a 100-year service life.
Metropolitan Water District of Southern California Second Lower Feeder PCCP Rehabilitation Reach 2
To remedy distressed pipeline, Northwest Pipe manufactures steel pipe for system rehabilitation. Using the reliner method, the Metropolitan Water District of Southern California is repairing a critical water line. This cost effective, minimally invasive method eliminates water loss without the need to excavate or install a completely new pipeline system.