Mcmillen, Inc.

Mcmillen, Inc., doing business as Mcmillen Jacobs Associates, is an international engineering, construction, and water resources infrastructure firm headquartered in Boise, Idaho, that operates as a prime contractor (100% of recent awards) on full-and-open federal contracts with no small business set-asides. The vendor holds a $1.16 billion combined potential value footprint across 341 federal awards, split between large fixed-price definitive contracts, indefinite delivery vehicles, and delivery orders across water resources, civil infrastructure, and facility design domains.

Mcmillen Jacobs specializes in architect-engineer services, heavy civil engineering construction, and water resources facility design and modernization. Representative recent work includes a $20.95 million firm fixed-price definitive contract awarded by the Department of the Interior Bureau of Indian Affairs on July 2, 2026, for Colorado River Irrigation Project check structure rehabilitation and lateral canal construction in Parker, Arizona, running through July 20, 2028; a $28.4 million firm fixed-price definitive contract from the U.S. Army Corps of Engineers for tainter gate replacement at Webbers Falls Lock and Dam in Oklahoma, awarded March 31, 2026, and scheduled for completion October 31, 2029; and a $14.06 million definitive contract from the Bureau of Reclamation for Archimedes Screw Pump Station construction at Topock Marsh in Parker, Arizona, with an August 31, 2026 completion date. The vendor also delivers architecture-engineer design services, gate and valve replacement work at navigation locks and dams, lock chamber modifications, hydroelectric powerhouse upgrades, and fish hatchery facility design.

Customer concentration is pronounced. The top five funding agencies account for 59% of awards by count. The Department of the Army Corps of Engineers dominates by dollar value, with 15 awards carrying $388 million in combined potential value—primarily large definitive contracts and task orders for navigation lock improvements, hydroelectric facility upgrades, and structural gate replacements. The Department of the Interior Fish and Wildlife Service Region 1 represents the largest award-count customer with 97 awards ($57.9 million combined potential value), drawing from a high volume of smaller delivery orders for design, analysis, and facility work. The Department of the Interior National Park Service Intermountain Region, the Bureau of Reclamation, and the Army Corps of Engineers Engineering District Omaha round out the active set, with the two rankings diverging sharply—Army Corps leads dollars while Fish and Wildlife leads volume.

The vendor holds position on multiple indefinite delivery vehicles. The Indefinite Delivery Contract INF14PC00039 (Fish and Wildlife) carries 42 task orders with $4.2 million combined potential value; Contract 140F0719D0005 (Fish and Wildlife) carries 23 task orders with $4.4 million; Contract INF09PC60139 (Fish and Wildlife) carries 20 task orders with $10.3 million; Contract INP10PC60531 (National Park Service) carries 18 task orders with $9.7 million; and Contract INF09PC60091 (Fish and Wildlife) carries 17 task orders with $6.3 million. The vendor also holds a $200 million Multiple Award Task Order Contract (MATOC) with the Army Corps of Engineers for stoplog slot cuts conversion work along the McClellan-Kerr Arkansas River Navigation System through February 2029, with two delivery orders already issued ($16.8 million and $16.5 million respectively) for lock chamber bulkhead work in Arkansas. A $34 million Indefinite Delivery contract with the Army Corps of Engineers Northwestern Division provides architect-engineer services for flood control, navigation, and hydroelectric infrastructure across Washington, Oregon, and Idaho. The vendor was also recently awarded a $18 million ceiling under the Global Multiple Award Construction Contract (GMACC) Region 3 program on May 22, 2026, with a completion date of November 21, 2031.

Activity has declined sharply in recent years—13 awards in 2022 dropping to 6 in 2026 year-to-date—but the vendor faces significant recompete exposure. Eight awards (combined potential value $74.8 million) reach ultimate completion within the next twenty-four months, creating near-term competitive pressure on major contracts such as the McNary Navigation Lock power and controls upgrade ($22.4 million, due July 16, 2025) and the Old River Low Sill Structure dewatering project ($56.4 million, due January 25, 2026).

Service Contract Inventory reporting captures limited federal services activity above the $150,000 threshold: $2.9 million invoiced across FY2022–FY2024, with $2.5 million in FY2023 supporting 2.3 FTEs. SCI-reported hourly rates for government-paid labor ran a median of $472/hr, ranging from $243/hr at the tenth percentile to $530/hr at the ninety-fifth percentile, reflecting engineering and design-labor-heavy delivery. Across SCI-reportable prime contracts, subcontractors accounted for 4% of total contractor hours, with four named subs reported—indicating the vendor builds most of its delivery teams in-house rather than relying on subcontract labor. The vendor reported one federal subcontract award: pipeline assessment services to Reid Middleton, Inc., for the Clearwater Fish Hatchery Analysis project in September 2023.

The corporate structure includes a subsidiary, Mjbv, though the source does not specify its operational role or capability framing.

McMillen ,LLC is a woman-owned small business formed in 2004 with the purpose of providing engineering and environmental consulting services, and construction management in the specific fields of water, transportation and construction engineering.