Project Awarded – Detroit Dam Tainter Gate Rehabilitation

Northbank Civil and Marine, Inc. was recently awarded the Detroit Dam Tainter Gate Rehabilitation project for $13,075,000.

The work consists of the rehabilitation of 6 tainter/spillway gates. This includes structural strengthening the gates, full replacement of the all the gate hoist equipment, replacement of the trunnion bearing systems, and replacing the switchgear, limit switches, lighting and gate control systems. Onsite work will begin in 2019 and are scheduled to complete 3 gates per season (October 15 through January 31 annually) with the project end date in 2022.

Project Awarded – Lower Granite Dam PIT Tag Monitoring Installation

Northbank Civil and Marine, Inc. was just awarded the Lower Granite Dam PIT Tag Monitoring Installation Design-Build project for $5,711,972. Design will start immediately and onsite work is scheduled to begin in September 2018.

Work consists of modifying spillbay 1 and installing 11 new PIT Tag monitoring antennas (to monitor juvenile fish passage) into the spillway ogee. Requires partial concrete demolition of the spillway ogee and embedding the new antennas into the concrete and pouring concrete over the top. Also includes installation of the monitoring building, equipment and control system next to the spillbay.

Project Awarded – Blue River Dam Generator Replacement

Northbank has been contracted to provide and install a new 100 kW backup generator enclosed in a new pre-engineered building at Blue River Dam in Blue River, OR. The new generator building will house the primary distribution panels for the service feed and will provide the Intake Water Tower Regulating Outlet Motors and the Dam’s Spillway Gates with power. Major construction activities include: New Electrical Ductbank, Design and Install Concrete Foundation and Apron, Design and Install CMU Wall, Install High Security Fence, New Electrical and Control Panels and related equipment, and Old Equipment Demolition. Construction is slated to begin Spring 2018 and will be completed late Summer 2018.

Project Awarded – The Dalles Locker Room

This design-build project will involves the installation of a 1000 square foot locker room inside an existing dam. Features of work include steel structure installation, plumbing, electrical, HVAC systems, and finishes. NCM has subcontracted with two design firms to complete the plans and specifications for the project. Design and substantial completion will occur within a short six month window.

Project Awarded – Lower Monumental Dam Drainage and Unwatering Pump Replacement

This is a $4.7 million project that includes removing and installing new low voltage and medium voltage motor control centers and large unwatering & drainage pumps, and installation of an oil water separator system all inside the powerhouse at Lower Monumental Dam. On site work is set to start in October of 2018 and scheduled to be completed by Spring of 2019.

Project Awarded – Cle Elum Fish Passage Tunnel

Cle Elum Dam, located 10 miles northwest of Cle Elum, Washington was completed in the 1930s without fish passage facilities.  The finished Cle Elum Dam Fish Passage Facility will promote ecological connectivity, biodiversity and natural production of salmonids in the Cle Elum Reservoir.

The Cle Elum Lake Fish Passage Juvenile Facility Tunnel is a $15.2 million project. Northbank is responsible installing a 10’ diameter fish passage tunnel over 1200 feet long through glacial outwash from the outlet portal below the lake to the secant pile shaft upstream of the dam as well as completing the helix chamber foundation system.  Work includes mass excavation, shoring, tunnel excavation and lining, shaft excavation and concrete. The helix chamber foundation includes a drainage system, secant pile concrete overlay walls and mass concrete. Site work will begin April of 2018 and be complete by August of 2020.

New Office

Our new headquarters building is underway and schedule to be completed by May 2018. The building will be a combination of office and warehouse space that is being built on 6 acres of newly purchased property in Vancouver, WA. Our new address will be 4180 NW Fruit Valley Road, Vancouver, WA 98660.

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