Weaverville California State Route 3 Culvert Rehabilitation
The project’s mountainous terrain provided a great environment to introduce our new Permalok® Auger Bore Joint, which requires less jacking force for full joint engagement.
Gilboa Dam Schoharie Reservoir Low Level Outlet
Northwest Pipe manufactured multiple sizes of Permalok including 180” Internal diameter, which is the largest use of Permalok® as a carrier pipe manufactured to date, for this project which supports one of the major reservoirs supplying New York City with a potable water.
I-10 Utility Bridge 24” Waterline Replacement in El Paso
This expedited project included both Northwest Pipe steel water transmission pipe and Permalok steel casing pipe.
Philadelphia International Airport Runway 27L Extension
Its strength to withstand the weight of a loaded plane landing and joints that sufficiently withstand any exposure to jet fuel and other petroleum-based fuel products, make Permalok steel casing pipe an ideal material for this microtunneling project at a busy airport.
Willamette Water Supply Program
Northwest Pipe is supplying pipe for four work packages for this large water infrastructure project. Steel pipeline was selected due to its ability to better withstand natural disasters and the impacts of a large earthquake.