Dennis Washington

$7.67 B

Ranked #470 in World

About Dennis Washington

Dennis R. Washington, an influential American billionaire and industrialist hailing from Spokane, Washington, has made a significant mark in the construction and mining sectors. His journey began post-high school with a modest loan, catapulting him into Montana's largest contracting by 1969 and consequently diversifying into various industries, including railroads and marine services. Washington Companies, operating across North America, encompasses a fleet of privately held entities specializing in coastal marine transportation, railroad logistics, jet aircraft enhancements, and heavy equipment. The titan of industry, married to Phyllis and father to Kyle, continues to impact finance with his vast portfolio spanning from real estate to environmental services.

Born

July 27, 1934

Age

91 years

Source Of Wealth

Construction, Mining

Industries

Logistics

Citizenship

United States

Residence

Missoula, Montana

Education

Diploma, High School

Dennis R. Washington, an American billionaire industrialist, was born in 1934 in Spokane, Washington. He grew up in Spokane, Bremerton, Washington, and Missoula, Montana. His parents separated when he was young, and he lived with his mother.

Dennis Washington: Family

Dennis R. Washington is married to Phyllis and they reside in Missoula, Montana. They have a son named Kyle Washington, who serves as the co-chairman of Seaspan Marine Corporation.

Dennis Washington: Career Highlights

After completing high school, Dennis R. Washington worked in construction in Alaska and Montana. At the age of 30, he embarked on his business career with a $30,000 loan and a single bulldozer. He founded Washington Construction, which focused on highway contracts, and by 1969, he had become the largest contractor in Montana.

In the 1970s, Washington expanded his business into mining and dam construction. A significant milestone in his career came in 1986 when he acquired a copper and molybdenum mine in Butte, Montana, which proved to be highly profitable.

Washington further diversified his business portfolio by venturing into railroads, marine services, coastal shipping, aviation, and real estate. In 1996, he acquired Morrison-Knudsen Corporation, leading to the formation of Washington Group International.

Dennis Washington: Companies

Dennis R. Washington's business empire comprises a group of individual privately held companies headquartered in the United States and western Canada. These companies include:

Seaspan ULC: Provides coastal marine transportation, shipdocking, ship escort, ship repair, and shipbuilding services in western North America.
Montana Rail Link: Operates as a Class II regional railroad, covering over 900 route miles in Montana and Idaho.
Aviation Partners Inc.: Develops and markets the Blended Winglet Performance Enhancement System for business jet aircraft.
Envirocon Inc.: Offers environmental remediation, ecological restoration, decommissioning, and demolition services.
Southern Railway of British Columbia (SRY): Serves as a major freight transporter in British Columbia.
Modern Machinery Co. Inc.: Sells and rents heavy equipment, supplies parts, and provides service for the construction, mining, aggregate, and logging industries.

Montana Resources LLP: Operates an open-pit copper and molybdenum mine in Butte, Montana.
Seaspan Corporation (NYSE:SSW): Recognized as one of the world's leading independent containership owners, owning and managing ships chartered long-term.

Dennis Washington: Major Achievements

Dennis R. Washington's notable achievements include:

Becoming the largest contractor in Montana by 1969.
Acquiring a copper and molybdenum mine in Butte, Montana, in 1986, which became highly profitable.
Diversifying his business portfolio into various industries, including railroads, marine services, coastal shipping, aviation, and real estate.
Acquiring Morrison-Knudsen Corporation in 1996, leading to the formation of Washington Group International.

Dennis Washington: Awards & Achievements

Dennis R. Washington has received numerous awards and honors throughout his career, including:

[List of awards and honors]

Dennis Washington: Personal Life & Legacy

Dennis R. Washington resides in Missoula, Montana, with his wife Phyllis. He owns a private estate on Stuart Island, British Columbia, featuring a fishing lodge and golf course. The Washington–Grizzly Stadium at the University of Montana bears his name. His private yacht, Attessa IV, has been featured in Forbes magazine. Additionally, he owns a Boeing Business Jet, 737-700 registration N162WC.

Dennis Washington: Trivia

Dennis R. Washington is known for his philanthropic contributions, particularly in the areas of education and healthcare. He has made significant donations to the University of Montana, Montana State University, and the Providence St. Patrick Hospital in Missoula.

Wealth History

Timeline

1934

Dennis R. Washington is born in Spokane, Washington.

1964

Dennis R. Washington starts his business career at age 30 with a $30,000 loan and a single bulldozer.

1969

Dennis R. Washington becomes the largest contractor in Montana.

1970s

Dennis R. Washington expands into mining and dam construction.

1986

Dennis R. Washington acquires a copper and molybdenum mine in Butte, Montana, which becomes profitable.

1996

Dennis R. Washington acquires Morrison-Knudsen Corporation, creating Washington Group International.

Dennis Washington : FAQs

What is Dennis Washington's current net worth?

Dennis Washington's current net worth is $7.67 billion.

What is Dennis Washington's current global rank among billionaires?

Dennis Washington holds the 470th position globally among billionaires.

What is Dennis Washington's current ranking within the United States?

Dennis Washington holds the 186th position in United States.

What was the change in Dennis Washington's net worth compared to the previous year?

Dennis Washington's net worth decreased by 363.57 million dollars compared to the previous year 2025, when his net worth was 8.03 billion dollars.

What are Dennis Washington's main sources of wealth?

Dennis Washington's main source of income comes from Construction, Mining.

In which industry does Dennis Washington primarily operate?

Dennis Washington is primarily involved in the Logistics industry.

What is Dennis Washington educational background?

Dennis Washington holds a Diploma from High School.

How old is Dennis Washington?

Dennis Washington is 91 years old.

How many children does Dennis Washington have?

Dennis Washington has 2 children.

Who is American billionaire industrialist Dennis R. Washington?

Dennis R. Washington is an American billionaire industrialist born in 1934, known for founding Washington Construction and expanding into various fields such as mining, railroads, and marine services. He became Montana's largest contractor by 1969 and acquired significant businesses like Morrison-Knudsen Corporation in 1996.

What companies are included in the Washington Companies group?

The Washington Companies group includes privately held companies such as Seaspan ULC, Montana Rail Link, Aviation Partners Inc., Envirocon Inc., Southern Railway of British Columbia, Modern Machinery Co. Inc., Montana Resources LLP, and Seaspan Corporation, operating primarily in the US and western Canada.

What are some of Dennis R. Washington's personal interests and family details?

Dennis R. Washington is married to Phyllis, resides in Missoula, Montana, and has a son named Kyle Washington. He enjoys private amenities like a fishing lodge and golf course on Stuart Island, and owns the Attessa IV yacht and a Boeing Business Jet. The Washington–Grizzly Stadium at the University of Montana is named in his honor.

How did Dennis R. Washington start his business empire and achieve his billionaire status?

Dennis R. Washington began his business empire at the age of 30 with a $30,000 loan and a bulldozer, establishing Washington Construction with a focus on highway contracts. He became a billionaire by expanding his business into mining, dam construction, railroads, marine services, aviation, and real estate.

What notable expansions and acquisitions did Dennis R. Washington make in the 1970s and 1980s?

In the 1970s, Dennis R. Washington expanded into mining and dam construction. He made a notable acquisition in 1986 when he acquired a copper and molybdenum mine in Butte, Montana, which turned profitable. His strategic expansions into different sectors contributed significantly to his success.