Manson Construction Co

Manson Construction Co, a for-profit Subchapter S corporation headquartered in Seattle, Washington, and founded in 1905, is a marine construction and dredging specialist that operates as a prime contractor on federal waterfront, dredging, and harbor maintenance projects with no set-aside participation—competing exclusively on full-and-open merit. The vendor holds no SBA certifications and competes across unrestricted federal procurements, positioning itself as a large-scale federal contractor in the heavy civil and marine engineering space.

Manson's federal footprint centers on three capability areas grounded in recent awards: hopper dredging and maintenance dredging of federal navigation channels and harbors across the Gulf Coast, West Coast, and Southeast (exemplified by a $39.8 million Army Corps of Engineers West Coast hopper maintenance dredging contract awarded April 2026, a $38.6 million Mississippi River dredging contract from February 2025, and recurring Gulf Coast harbor maintenance work); waterfront construction, pier replacement, and naval facility infrastructure including piles, wharves, and mooring systems (evidenced by a $72.7 million Naval Facilities Engineering Command lighterage and small craft facility design-build contract at Marine Corps Support Facility Blount Island, awarded September 2025, and a $111.4 million Waterfront MACC IV delivery order for floating dry dock mooring facility work at Naval Base San Diego); and coastal restoration and beach nourishment projects (including a $35.5 million New Orleans to Venice Fritchie Brackish Marsh project awarded October 2024 and multiple Fort Pierce, Oceanside, and Ventura Harbor renourishment contracts). The vendor also holds a $66.5 million National Oceanic and Atmospheric Administration design-build contract for Pier Romeo recapitalization in North Charleston, South Carolina, and a $37.3 million National Park Service contract for seismic strengthening and stabilization of the Alcatraz Island wharf.

Customer concentration is heavily skewed toward the Department of the Navy Naval Facilities Engineering Command (28 awards, $3.32 billion combined potential value) and the Department of the Army Corps of Engineers Engineering District Jacksonville (25 awards, $1.66 billion combined potential value), which together account for 78% of the combined potential value across all recent awards. The Army Corps of Engineers broadly (239 awards across all districts, $996 million) represents the largest single customer by award count. The Engineering District New Orleans (76 awards, $728.8 million) and Engineering District Mobile (60 awards, $408.9 million) are major subsidiary customer concentrations, reflecting Manson's Gulf Coast dredging and harbor maintenance focus.

Manson places work under multiple standing federal vehicles: the Waterfront Multiple Award Construction Contract (Waterfront MACC IV under Naval Facilities Engineering Command, 7 task orders carrying $19.9 million combined potential value), NAVFAC Marine-Waterfront Construction vehicles, and numerous single-award Indefinite Delivery Contracts with Army Corps of Engineers districts. The vendor holds a $995 million Waterfront MACC with Naval Facilities Engineering Command for design-build and design-bid-build waterfront construction in Hawaii and Wake Island (2022–2027). Army Corps IDC positions include a $40 million single-award contract with the New Orleans District for hydraulic pipeline cutterhead dredge services (awarded July 2025, through July 2027), a $30 million hopper dredge rental contract with the Mobile District (awarded August 2024, through October 2025), a $49 million cutterhead pipeline dredge rental contract with the Mobile District (awarded May 2023, through July 2024), and multiple historical single-award vehicles ranging from $15 million to $20 million with Mobile, Los Angeles, Jacksonville, and Portland Districts.

Activity shows a mature, stable footprint: 21 awards in 2022, 23 in 2023, 20 in 2024, and 16 in 2025, with 6 awards recorded in 2026 year-to-date. Fourteen awards carrying $428.9 million in combined potential value reach ultimate completion within the next twenty-four months, representing material recompete exposure and opportunity for competitors seeking to displace Manson on Gulf Coast and waterfront dredging work.

Manson operates predominantly through its own delivery capacity; across SCI-reportable service contracts, subcontractors account for 36% of total contractor hours on average, with 11 named subcontractors across three prime records in fiscal years 2023–2024. The vendor reported $67.6 million in SCI-invoiced revenue from federal services (FY2023: $11.4 million across 12 FTEs; FY2024: $56.2 million across 66.1 FTEs), reflecting expansion of government-paid federal service contract activity. On SCI-reportable contracts, median hourly rates run around $456.72/hr, with senior labor pricing reaching into the $25,500/hr range, indicating heavy reliance on specialized engineering and supervisory labor. Manson maintains one named subsidiary, Manson Gulf, L.L.C., a for-profit limited liability company also performing federal contracts and grants work.

In its subcontractor role, Manson is engaged to BAE Systems Jacksonville Ship Repair LLC for ship repair work (three sub-awards, 2023–2025), a secondary and minor revenue stream relative to its dominant prime contracting posture. The vendor's federal contract portfolio spans 725 total awards (722 prime, 3 sub) with $9.14 billion in combined potential value and $4.49 billion in combined obligated dollars across 34 distinct customer agencies, with award history extending back to 1981.