LeaderPortfolio
Washington
Dennis Washington
Rank #482
UNITED STATESConstruction & EngineeringConstruction, mining

Dennis Washington

Net Worth
$7.724B
0% (24h)
Dennis Washington (born 1934) is a prominent American billionaire industrialist, celebrated for his achievements in construction, mining, and transportation. His journey began with a modest construction venture, fueled by a $30,000 loan, which rapidly expanded into the Washington Companies, a vast privately held conglomerate. His source of wealth stems from construction and mining. Washington's career showcases an impressive trajectory, marked by strategic acquisitions, including a pivotal move into the mining sector, and expansion into various industries such as railroads and marine services. A dedicated philanthropist, he, along with his wife, established the Dennis & Phyllis Washington Foundation in 1988, which supports education, health, and community service initiatives. As of March 2026, Dennis Washington's net worth is estimated at $7.8 billion, solidifying his position as a leading figure in American business.

The Full Dossier

Early Life

Dennis Washington was born in Spokane, Washington, in 1934. He spent his childhood in various locations, including Spokane, Bremerton, and Missoula, Montana. His parents divorced when he was young, and he lived with his mother. Washington's early life included overcoming polio at age eight, which required hospitalization. He became self-sufficient at a young age, working various jobs. He graduated from Missoula High School in 1951.

Rise to Success

After high school, Washington worked in construction in Alaska before returning to Montana and working in his uncle's construction company. At age 30, in 1964, he started his own construction company, Washington Construction, with a $30,000 loan and a single bulldozer. The company grew to be the largest contractor in Montana by 1969. In the 1970s, he expanded into mining and dam construction. A significant achievement was acquiring a copper and molybdenum mine in Butte, Montana, in 1986, which proved highly profitable. Washington further diversified into railroads, marine services, coastal shipping, aviation, and real estate.

Key Business Strategies

Washington's business strategy involved acquiring and revitalizing underperforming assets. He focused on cost-cutting measures, such as hiring non-union workers, and implemented profit-sharing. His approach also included strategic acquisitions. In 1996, Washington Construction acquired Morrison-Knudsen Corporation, forming Washington Group International.

Philanthropy

Dennis and Phyllis Washington established the Dennis & Phyllis Washington Foundation in 1988. The foundation focuses on education, health, human services, community service, and arts and culture. The foundation supports various organizations, providing scholarships and funding programs that enhance the quality of life for individuals and communities.

Career Timeline

1996

Acquired Morrison-Knudsen

Merged Washington Construction Group with Morrison Knudsen Corporation, forming Washington Group International.

1988

Dennis & Phyllis Washington Foundation

Founded the Dennis & Phyllis Washington Foundation to coordinate philanthropic efforts.

1987

Montana Rail Link

Leased Burlington Northern Railroad's southern Montana route, now operating as Montana Rail Link.

1986

Acquired Copper Mine

Acquired a copper and molybdenum mine in Butte, Montana, which later became highly profitable.

1969

Largest Contractor in Montana

Washington Construction became the largest construction firm in Montana.

1964

Founded Washington Construction

Started the construction business with a loan and a single bulldozer, which grew into the largest construction firm in Montana.

Philanthropic Impact

Philanthropy$XB

Dennis & Phyllis Washington Foundation

Supports organizations in education, health and human services, community service, and arts and culture.

Philanthropy$XB

Young Life

Ongoing commitment to Young Life, an interdenominational Christian ministry to youth.

Wealth Trajectory