Bonneville FGE Gatewell Improvement
The project included concrete demolition via hydro-demolition, and installation of a new concrete corbel in the Gatewells of Powerhouse 2 intake bays.
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Columbia River Intake Screen Upgrade
This project occurred during the 2020-2021 Columbia River in-water work window.
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Ice Harbor Headcover Oil Water Separator
Ice Harbor Dam Headcover and Oil Water Separator Project consisted of installation of a stainless steel header pipe that will carry oil-in-water from each power unit to the sump room where three Gravity Oil Water Separators
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Smith Intake Gate and Hoist Refurbishment
This project for Eugene Water and Electric Board (EWEB) included the complete removal, refurbishment and select replacement of the mechanical and electrical equipment.
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Stillguamish Permanent Fishway - Design / Build
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Howard Hanson Dam Spillway Gates Retrofits
Howard Hanson Dam project consists of retrofitting 2 spillway gates.
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Bonnveille Dam Powerhouse Oil / Water Separator
The work consisted of the installation of two new oil water separators in the existing ice and trash chute at Bonneville Dam Powerhouse II
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McNary Headcover Oil Water Separator
The scope of this contract consisted of installing Adaptek Disc Pumps with vertical base mount and VFD drive.
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Lower Granite PIT Tag
This $7 million project consisted of designing and installing 11 new PIT Tag monitoring antennas into the existing spillway ogee.
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McNary Precipitron Replacement
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Detroit Dam Tainter Gate Rehabilitation
The work consists of the rehabilitation of 6 spillway gates.
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Wilsonville WWTP Outfall
This $1.25 million project included removing the existing damaged outfall and installing a new 42” diameter concrete coated welded steel pipe outfall with 5 port diffusers.
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Little Goose Dam - Pump Replacement
The work consisted of replacing the drainage and unwatering pump systems with associated piping and motor control centers in the drainage gallery of all the power generating units.
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Northport Bridge Repair
This project involved the repair of existing bridge anchorages at two piers, removal of an expansion joint gutter system and installation of a new rain water diverter system.
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Lucky Peak Maintenance Hoist
This Design-Build project required design, fabricate and installing dual hoist (15-TN each) wheeled trolley crane that runs on the existing emergency gate hoist rails.
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Foster Dam Crane Demolition
This project required the demolition of a concrete gantry crane atop Foster Dam in Sweet Home, Oregon.
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Little Goose Dam – Fish Ladder
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Cle Elum Lake Fish Passage
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Little Goose Dam - Booms and Barriers
NCM performed work at Little Goose Lock and Dam that included the installation of a boat barrier system and trash shear boom above the dam.
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Hood Canal Bridge Rehab
Hood Canal connects the Olympic and Kitsap Peninsulas. At 7,869 feet (2,398.5 m) long, (floating portion 6,521 feet (1,987.6 m)) it is the longest floating bridge in the world located in a saltwater tidal basin, and the third longest floating bridge overall.
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Lower Monumental Navigational Lock Tainter Valve 4
The scope of this contractor was isolated to the Lower Monumental Dam’s Navigational Lock Tainter Valve No. 4.
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The Dalles US Gate Replacement
The Dalles Navigational Lock Upstream Gate Replacement, Controls Upgrade, and Downstream Gate Gudgeon Replacement was awarded to Northbank on a best value basis.
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Bonneville Lock and Dam Lamprey Passage
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Port of Vancouver Terminal 1 - Emergency Dock Repair
Replace deteriorated pile caps and stringers at Terminal 1.
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Fall Creek Fish Facility
This purpose of this project is to upgrade the existing water piping that supplies the Fall Creek Adult Fish Collection Facility.
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Swiftcurrent Creek
The short, 6-week long first season removed the 75-foot long, five span concrete deck bridge built in the 1930’s, and replaced it with a single span precast hollow core slab design.
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Oak Street Fish Ladder
This project consisted of demolition and removal of an existing reinforced concrete fish ladder and portion of an existing reinforced concrete diversion dam, spillway and headworks.
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Lookout Point Tainter Gate Rehabilitation
Lookout Point, located on the Middle Fork Willamette River, has five spill bays controlled by Tainter gates.
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McNary Fish Pump #2 Repair
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Lower Monumental JFF Barge Dock Coffer Cell Repair
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RECENT PROJECTS

  • Bridges
  • Cranes and Hoists
  • Dam Navigational Lock Rehabilitation
  • Fish Passage Enhancement
  • Hydro Power Infrastructure
  • Marine Facilities and In-Water Work
  • Marine Pipelines and Outfalls
  • Oil Water Separators / Spill Prevention
  • All
Bonneville FGE Gatewell Improvement
2021-12-03T22:44:14.914Z
The project included concrete demolition via hydro-demolition, and installation of a new concrete corbel in the Gatewells of Powerhouse 2 intake bays.
  • Fish Passage Enhancement
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Columbia River Intake Screen Upgrade
2021-12-11T06:52:53.375Z
This project occurred during the 2020-2021 Columbia River in-water work window.
  • Marine Pipelines and Outfalls
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Ice Harbor Headcover Oil Water Separator
2021-12-03T23:16:51.667Z
Ice Harbor Dam Headcover and Oil Water Separator Project consisted of installation of a stainless steel header pipe that will carry oil-in-water from each power unit to the sump room where three Gravity Oil Water Separators
  • Oil Water Separators / Spill Prevention
LEARN MORE
Smith Intake Gate and Hoist Refurbishment
2021-11-30T05:48:09.848Z
This project for Eugene Water and Electric Board (EWEB) included the complete removal, refurbishment and select replacement of the mechanical and electrical equipment.
  • Cranes and Hoists
LEARN MORE
Stillguamish Permanent Fishway - Design / Build
2021-12-03T22:57:02.317Z
  • Fish Passage Enhancement
LEARN MORE
Howard Hanson Dam Spillway Gates Retrofits
2021-12-03T23:04:10.309Z
Howard Hanson Dam project consists of retrofitting 2 spillway gates.
  • Hydro Power Infrastructure
LEARN MORE
Bonnveille Dam Powerhouse Oil / Water Separator
2021-12-03T23:13:47.683Z
The work consisted of the installation of two new oil water separators in the existing ice and trash chute at Bonneville Dam Powerhouse II
  • Oil Water Separators / Spill Prevention
LEARN MORE
McNary Headcover Oil Water Separator
2021-12-03T23:15:32.176Z
The scope of this contract consisted of installing Adaptek Disc Pumps with vertical base mount and VFD drive.
  • Oil Water Separators / Spill Prevention
LEARN MORE
Lower Granite PIT Tag
2021-12-03T22:54:32.879Z
This $7 million project consisted of designing and installing 11 new PIT Tag monitoring antennas into the existing spillway ogee.
  • Fish Passage Enhancement
LEARN MORE
McNary Precipitron Replacement
2021-12-03T23:01:34.343Z
  • Hydro Power Infrastructure
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Detroit Dam Tainter Gate Rehabilitation
2021-12-03T23:02:51.418Z
The work consists of the rehabilitation of 6 spillway gates.
  • Hydro Power Infrastructure
LEARN MORE
Wilsonville WWTP Outfall
2021-12-03T23:10:07.296Z
This $1.25 million project included removing the existing damaged outfall and installing a new 42” diameter concrete coated welded steel pipe outfall with 5 port diffusers.
  • Marine Pipelines and Outfalls
LEARN MORE
Little Goose Dam - Pump Replacement
2021-12-03T23:12:49.274Z
The work consisted of replacing the drainage and unwatering pump systems with associated piping and motor control centers in the drainage gallery of all the power generating units.
  • Oil Water Separators / Spill Prevention
LEARN MORE
Northport Bridge Repair
2021-11-19T01:04:30.162Z
This project involved the repair of existing bridge anchorages at two piers, removal of an expansion joint gutter system and installation of a new rain water diverter system.
  • Bridges
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Lucky Peak Maintenance Hoist
2021-11-19T01:04:41.270Z
This Design-Build project required design, fabricate and installing dual hoist (15-TN each) wheeled trolley crane that runs on the existing emergency gate hoist rails.
  • Cranes and Hoists
LEARN MORE
Foster Dam Crane Demolition
2021-11-19T07:20:57.297Z
This project required the demolition of a concrete gantry crane atop Foster Dam in Sweet Home, Oregon.
  • Cranes and Hoists
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Little Goose Dam – Fish Ladder
2021-12-03T22:40:53.409Z
  • Fish Passage Enhancement
LEARN MORE
Cle Elum Lake Fish Passage
2021-12-03T22:53:14.403Z
  • Fish Passage Enhancement
LEARN MORE
Little Goose Dam - Booms and Barriers
2021-12-03T23:05:38.948Z
NCM performed work at Little Goose Lock and Dam that included the installation of a boat barrier system and trash shear boom above the dam.
  • Marine Facilities and In-Water Work
LEARN MORE
Hood Canal Bridge Rehab
2021-11-19T01:04:17.365Z
Hood Canal connects the Olympic and Kitsap Peninsulas. At 7,869 feet (2,398.5 m) long, (floating portion 6,521 feet (1,987.6 m)) it is the longest floating bridge in the world located in a saltwater tidal basin, and the third longest floating bridge overall.
  • Bridges
LEARN MORE