FY26 Willapa Bay Maintenance Dredging Bid Opening Details
Closed Solicitation Posted
This opportunity was awarded. See the award notice from .
- Solicitation number
- W912DW26BA001
- Agency
-
ENDIST Seattle
US Army Corps of Engineers, Department of Defense
- Responses due
- Set-aside
- No set-aside
Opportunity facts
- NAICS code
- 237990 Other Heavy and Civil Engineering Construction
- PSC
- Y1KF Construction Of Dredging Facilities
- Place of performance
- 98640
- Points of contact
Notice details come from SAM.gov. Updated .
About this opportunity
The U.S. Army Corps of Engineers, Seattle District is procuring maintenance dredging services for three Federal Navigation Channels in Willapa Harbor, Washington through solicitation number W912DW26BA001. The project requires mechanical clamshell dredging of approximately 180,000 cubic yards across the Bay Center, Nahcotta, and Tokeland channels, with an additional 10,000 cubic yards potentially required in the Bay Center/Palix River Access Lane to ensure adequate transit depths for dredging equipment and support vessels. Dredged material will be disposed via bottom dump scow at either the Cape Shoalwater or South Channel open-water dispersive disposal sites. The solicitation emphasizes the significant navigational hazards present in Willapa Bay, including an exposed Pacific Ocean entrance, shifting shoals, unpredictable weather conditions, and over 50 unreported groundings annually, which present serious safety challenges for contractor operations. The bid opening occurred on January 13, 2026, with three amendments issued to the original solicitation posted on November 17, 2025, and the evaluation criteria focus on competitive bidding with the Independent Government Estimate (IGE) established at $8,099,000.
This solicitation included no small business set-asides. Three contractors submitted bids: J.E. McAmis, Inc. submitted the lowest bid at $6,269,500.00 (22% below the IGE), HME Construction, Inc. bid $9,249,250.00 (14.2% above the IGE), and Manson Construction Co. bid $16,891,900.00 (108.6% above the IGE), indicating significant variation in contractor pricing strategies for this complex project. Work is anticipated to commence in summer 2026 with staggered in-water work windows varying by location: Bay Center/Palix River from July 16 through September 30, Nahcotta from July 16 through February 1, and Tokeland from July 16 through February 15, accommodating the worst season for storm and marine conditions in the region. The project encompasses base items including mobilization/demobilization, initial dredging of 25,000 cubic yards at Bay Center Entrance Channel, water quality monitoring, and access lane dredging, with optional items providing additional dredging quantities at various locations. Performance will occur in Ocean Park, Washington 98640, with operations conducted across the three separate channel locations within Willapa Harbor.
Notice text
4 versions
Update #4 · Latest ·
Please see attached Amendment 0003 for complete details. Willapa Harbor Maintenance Dredging project in Willapa Harbor, Washington. USACE, Seattle District has been tasked to solicit for and award a construction contract to maintenance dredge the Bay Center, Nahcotta, and Tokeland Federal Navigation Channels to their authorized depths. Up to 180,000 CY is expected to be dredged across the three features via mechanical clamshell dredging. The minimum required dredging depth varies from -10 ft (Bay Center and Nahcotta) to -15 ft (Tokeland), MLLW, +2 ft overdepth at each location. In addition, dredging approximately 10,000 CY to a minimum depth of -9 ft MLLW (+1 ft overdepth) may be required in the Bay Center/Palix River Access Lane to ensure sufficient water depths for the dredge, scow, and tugboats to transit between Bay Center and the disposal sites. This amount has the potential to change due to the dynamic nature of the Palix River at its confluence with Willapa Bay. Dredged material will be disposed via bottom dump scow at the Cape Shoalwater open-water dispersive disposal site or the South Channel open-water dispersive disposal site. Work is anticipated to begin in summer 2026. The work window varies by project features. For any given calendar year, the in-water work windows are as follows:? Bay Center/Palix River: 16 Jul through 30 Sep? Nahcotta: 16 Jul through 01 Feb? Tokeland: 16 Jul through 15 FebWillapa Bay presents significant navigational hazards due to its exposed Pacific Ocean entrance, unmaintained channels, shifting shoals, and unpredictable weather. This performance window includes the worst season for storm and marine conditions. The U.S. Coast Guard has removed aids-to-navigation at Willapa Bar because of unreliable conditions, and their Waterways Analysis notes over 50 unreported groundings annually. These hazards present serious safety concerns for contractors and local users, complicating mobilization and dredging operations throughout the project area.In accordance with Federal Acquisition Regulation (FAR) Part 36 , the estimated construction price range for this project is: Between $5,000,000 and $10,000,000. Estimated duration of the dredging activities is 3-7 months. PLEASE SEE THE ATTACHED SOLICITATION, SPECIFICATIONS AND DRAWINGS FOR INSTRUCTIONS ON SUBMITTING A BID IN RESPONSE TO THE SOLICITATION.
Update #3 ·
Please see attached Amendment 0003 for complete details. Willapa Harbor Maintenance Dredging project in Willapa Harbor, Washington. USACE, Seattle District has been tasked to solicit for and award a construction contract to maintenance dredge the Bay Center, Nahcotta, and Tokeland Federal Navigation Channels to their authorized depths. Up to 180,000 CY is expected to be dredged across the three features via mechanical clamshell dredging. The minimum required dredging depth varies from -10 ft (Bay Center and Nahcotta) to -15 ft (Tokeland), MLLW, +2 ft overdepth at each location. In addition, dredging approximately 10,000 CY to a minimum depth of -9 ft MLLW (+1 ft overdepth) may be required in the Bay Center/Palix River Access Lane to ensure sufficient water depths for the dredge, scow, and tugboats to transit between Bay Center and the disposal sites. This amount has the potential to change due to the dynamic nature of the Palix River at its confluence with Willapa Bay. Dredged material will be disposed via bottom dump scow at the Cape Shoalwater open-water dispersive disposal site or the South Channel open-water dispersive disposal site. Work is anticipated to begin in summer 2026. The work window varies by project features. For any given calendar year, the in-water work windows are as follows:? Bay Center/Palix River: 16 Jul through 30 Sep? Nahcotta: 16 Jul through 01 Feb? Tokeland: 16 Jul through 15 FebWillapa Bay presents significant navigational hazards due to its exposed Pacific Ocean entrance, unmaintained channels, shifting shoals, and unpredictable weather. This performance window includes the worst season for storm and marine conditions. The U.S. Coast Guard has removed aids-to-navigation at Willapa Bar because of unreliable conditions, and their Waterways Analysis notes over 50 unreported groundings annually. These hazards present serious safety concerns for contractors and local users, complicating mobilization and dredging operations throughout the project area.In accordance with Federal Acquisition Regulation (FAR) Part 36 , the estimated construction price range for this project is: Between $5,000,000 and $10,000,000. Estimated duration of the dredging activities is 3-7 months. PLEASE SEE THE ATTACHED SOLICITATION, SPECIFICATIONS AND DRAWINGS FOR INSTRUCTIONS ON SUBMITTING A BID IN RESPONSE TO THE SOLICITATION.
Update #2 ·
Please see attached Amendment 0002 for complete details. Willapa Harbor Maintenance Dredging project in Willapa Harbor, Washington.USACE, Seattle District has been tasked to solicit for and award a construction contract to maintenance dredge the Bay Center, Nahcotta, and Tokeland Federal Navigation Channels to their authorized depths. Up to 180,000 CY is expected to be dredged across the three features via mechanical clamshell dredging. The minimum required dredging depth varies from -10 ft (Bay Center and Nahcotta) to -15 ft (Tokeland), MLLW, +2 ft overdepth at each location. In addition, dredging approximately 10,000 CY to a minimum depth of -9 ft MLLW (+1 ft overdepth) may be required in the Bay Center/Palix River Access Lane to ensure sufficient water depths for the dredge, scow, and tugboats to transit between Bay Center and the disposal sites. This amount has the potential to change due to the dynamic nature of the Palix River at its confluence with Willapa Bay. Dredged material will be disposed via bottom dump scow at the Cape Shoalwater open-water dispersive disposal site or the South Channel open-water dispersive disposal site. Work is anticipated to begin in summer 2026. The work window varies by project features. For any given calendar year, the in-water work windows are as follows:? Bay Center/Palix River: 16 Jul through 30 Sep? Nahcotta: 16 Jul through 01 Feb? Tokeland: 16 Jul through 15 FebWillapa Bay presents significant navigational hazards due to its exposed Pacific Ocean entrance, unmaintained channels, shifting shoals, and unpredictable weather. This performance window includes the worst season for storm and marine conditions. The U.S. Coast Guard has removed aids-to-navigation at Willapa Bar because of unreliable conditions, and their Waterways Analysis notes over 50 unreported groundings annually. These hazards present serious safety concerns for contractors and local users, complicating mobilization and dredging operations throughout the project area.In accordance with Federal Acquisition Regulation (FAR) Part 36 , the estimated construction price range for this project is: Between $5,000,000 and $10,000,000. Estimated duration of the dredging activities is 3-7 months. PLEASE SEE THE ATTACHED SOLICITATION, SPECIFICATIONS AND DRAWINGS FOR INSTRUCTIONS ON SUBMITTING A BID IN RESPONSE TO THE SOLICITATION.
Update #1 ·
Willapa Harbor Maintenance Dredging project in Willapa Harbor, Washington.USACE, Seattle District has been tasked to solicit for and award a construction contract to maintenance dredge the Bay Center, Nahcotta, and Tokeland Federal Navigation Channels to their authorized depths. Up to 180,000 CY is expected to be dredged across the three features via mechanical clamshell dredging. The minimum required dredging depth varies from -10 ft (Bay Center and Nahcotta) to -15 ft (Tokeland), MLLW, +2 ft overdepth at each location. In addition, dredging approximately 10,000 CY to a minimum depth of -9 ft MLLW (+1 ft overdepth) may be required in the Bay Center/Palix River Access Lane to ensure sufficient water depths for the dredge, scow, and tugboats to transit between Bay Center and the disposal sites. This amount has the potential to change due to the dynamic nature of the Palix River at its confluence with Willapa Bay. Dredged material will be disposed via bottom dump scow at the Cape Shoalwater open-water dispersive disposal site or the South Channel open-water dispersive disposal site. Work is anticipated to begin in summer 2026. The work window varies by project features. For any given calendar year, the in-water work windows are as follows:? Bay Center/Palix River: 16 Jul through 30 Sep? Nahcotta: 16 Jul through 01 Feb? Tokeland: 16 Jul through 15 FebWillapa Bay presents significant navigational hazards due to its exposed Pacific Ocean entrance, unmaintained channels, shifting shoals, and unpredictable weather. This performance window includes the worst season for storm and marine conditions. The U.S. Coast Guard has removed aids-to-navigation at Willapa Bar because of unreliable conditions, and their Waterways Analysis notes over 50 unreported groundings annually. These hazards present serious safety concerns for contractors and local users, complicating mobilization and dredging operations throughout the project area.In accordance with Federal Acquisition Regulation (FAR) Part 36 , the estimated construction price range for this project is: Between $5,000,000 and $10,000,000. Estimated duration of the dredging activities is 3-7 months. PLEASE SEE THE ATTACHED SOLICITATION, SPECIFICATIONS AND DRAWINGS FOR INSTRUCTIONS ON SUBMITTING A BID IN RESPONSE TO THE SOLICITATION.
Files
| File | Type | Posted |
|---|---|---|
| ABSTRACT - 26BA001 WILLAPA BAY DREDGING.pdf |
Notice history
| Notice | Type | Posted |
|---|---|---|
| FY26 Willapa Bay Maintenance Dredging Award Notice | Award Notice | |
| This notice | Solicitation |
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