Manson Construction Co

Manson Construction Co, a for-profit Subchapter S corporation headquartered in Seattle, Washington, and founded in 1905, is a large marine construction and dredging specialist that operates exclusively as a prime contractor on full-and-open federal procurements with no SBA certifications or set-asides. The vendor competes on unrestricted competitive basis across a 727-award portfolio valued at $9.18 billion in combined potential value, delivering hopper dredging, maintenance dredging, beach nourishment, waterfront construction, coastal restoration, and marine infrastructure repair services to federal agencies with no meaningful subcontract footprint (724 prime awards, 3 sub awards totaling negligible volume).

Manson's customer concentration centers on Army Corps of Engineers districts and Naval Facilities Engineering Command. The Corps of Engineers represents the largest customer by award count—236 awards worth $888.4 million combined potential value—with heavy concentration at the New Orleans District (78 awards, $782.5 million), the Mobile District (60 awards, $408.9 million), and the Jacksonville District (25 awards, $1.67 billion). The two customer rankings diverge significantly by dollar value: Naval Facilities Engineering Command anchors 27 awards worth $3.23 billion combined potential value, driven by large waterfront infrastructure and floating dry dock projects exceeding $100 million per delivery order. The Jacksonville District, by contrast, ranks second in combined potential value ($1.67 billion across 25 awards) despite lower award count, reflecting a mix of multi-year maintenance dredging and beach renourishment cycles and one-off channel deepening projects. NAVFAC's dollar concentration reflects design-build and design-bid-build waterfront construction work; the Corps' concentration reflects repetitive hopper and cutterhead dredging services awarded through single and multiple-award IDIQs.

Recent work spans Gulf Coast, West Coast, and Southeast dredging operations. Representative prime contracts include a $26.2 million hopper dredging service for Mississippi River maintenance (New Orleans District, February 2027), a $72.7 million floating dry dock mooring facility design-build at San Diego Naval Base (Naval Facilities Engineering Command, September 2025), a $92 million West Coast hopper maintenance dredging program covering Humboldt Bay and the Columbia River (Corps of Engineers Portland District, May 2023), a $87.3 million Norfolk Harbor Atlantic Ocean Channel deepening project (Corps of Engineers Norfolk District, December 2023), and a $69.9 million design-build pier recapitalization project at Pier Romeo for the National Oceanic and Atmospheric Administration in North Charleston, South Carolina (October 2023). Manson maintains a single-award IDIQ with Naval Facilities Engineering Command valued at $995 million for design-build and design-bid-build waterfront construction across Hawaii and Wake Island (June 2, 2022, through June 1, 2027), which has generated multiple task orders including a $111.4 million floating dry dock mooring facility delivery order at San Diego (January 2024) and a $65.7 million Pier Lima electrical capacity upgrade for Ford-class carrier operations (January 2026). The vendor also holds single-award indefinite delivery contracts with the Army Corps of Engineers for cutterhead pipeline dredge rental ($40 million, New Orleans District, through July 2027) and hopper dredge rental ($30 million, Mobile District, through October 2025), alongside expired or expiring contracts that collectively anchored $119 million in capacity across multiple Gulf Coast districts.

Activity trajectory shows growth through FY2024 (23 awards) followed by decline to 7 awards in FY2026 and 1 award in FY2027, reflecting the snapshot nature of recent activity and potential recompete timing. Within the next twenty-four months, 12 awards with combined potential value of $416.7 million reach ultimate completion and face recompete exposure, including the $26.2 million Southwest Pass hopper dredge contract (May 2027), multi-year maintenance dredging cycles at Oakland, Oceanside, Ventura, and Port Hueneme Harbors, and ongoing Jacksonville-area beach renourishment projects.

Service Contract Inventory data captures $121.4 million in SCI-reportable invoiced federal services revenue across FY2023–FY2025 ($11.4 million in FY2023, $56.2 million in FY2024, $53.9 million in FY2025), with reported FTE delivery ranging from 4.0 FTEs in FY2023 to 40.1 FTEs in FY2024 and 35.5 FTEs in FY2025. Government-paid hourly rates on federal services contracts captured in SCI show a median around $415/hr, with senior labor pricing reaching $13,459/hr and entry-level rates near $293/hr, reflecting a mix of engineering, project management, and specialized diver and marine technician labor. Across SCI-reportable prime contracts, subcontractors performed approximately 32 percent of total contractor hours, with 23 named subcontractors providing environmental monitoring (Coastwise Consulting, Merkel & Associates), specialized dredging and marine services (Crux Diving, Triton Marine Construction), equipment rental and logistics, and labor staffing support. The 32 percent sub-hours share reflects Manson's mixed delivery model on large design-build and specialized construction projects where significant portions of work flow to specialized environmental, diving, engineering, and equipment-rental subcontractors; on pure dredging contracts, the vendor typically executes the work with internal crews and equipment.

Manson maintains a single named subsidiary, Manson Gulf, LLC, a for-profit limited liability company engaged in contracts and grants activity, likely supporting Gulf Coast regional operations. The vendor's corporate structure and federal award history position it as a tier-one marine infrastructure prime with deep relationships at multiple Army Corps of Engineers districts and Naval Facilities Engineering Command, competing exclusively on unrestricted full-and-open merit with no reliance on set-asides or teaming arrangements with other large primes.