Bridget Rooney is a name that sits quietly at the intersection of three of America’s most storied worlds: professional football, Hollywood, and billionaire industry. As the granddaughter of Art Rooney Sr., the founder of the Pittsburgh Steelers, the mother of Kevin Costner’s son Liam, and the wife of billionaire businessman Bill Koch, her life story reads like a cross-section of American elite culture. Yet she has chosen privacy over publicity at nearly every turn.
Searches for “bridget rooney net worth” spike regularly, driven by curiosity about wealth connected to the Steelers dynasty and the Koch fortune. This article answers the most common questions directly, separates verified facts from rumor, and is honest about what is genuinely known and what is not.
Before diving in, here is the honest bottom line on her finances. There is no reliable, publicly disclosed figure for Bridget Rooney’s personal net worth. She holds no public office, has filed no public financial disclosures, and has never sold a company or a public asset that would let analysts put a number on her wealth. What is verifiable is the world she comes from and the world she married into, and both are worth understanding on their own terms.
Key Takeaways
- Who is Bridget Rooney? An American heiress, occasional actress, and philanthropist. She is the granddaughter of Pittsburgh Steelers founder Art Rooney Sr., the mother of Liam Costner (born 1996) with actor Kevin Costner, and the wife of billionaire Bill Koch since 2005.
- What is Bridget Rooney’s net worth? Her exact personal net worth is not publicly disclosed. Any specific dollar figure you see online is an unverified estimate. Her family background (the Rooney sports dynasty) and her marriage (the Koch fortune) place her in an exceptionally wealthy orbit.
- What does she do now? She co-founded Oxbridge Academy, a private school in Palm Beach, Florida, in 2011, and focuses on philanthropy and family life away from the spotlight.
Who Is Bridget Rooney?
The short, direct answer: Bridget Rooney is an American heiress, occasional actress, and philanthropist best known as the mother of Kevin Costner’s son Liam and the wife of billionaire businessman Bill Koch.
She was born in 1962 in California, the daughter of Timothy James Rooney and June Marraccini. Her father made his own mark in sports business, running Yonkers Raceway and the Palm Beach Kennel Club. But the defining fact of her family background is her grandfather: Art Rooney Sr., who founded the Pittsburgh Steelers in 1933 and built the franchise into one of the most successful and beloved teams in NFL history.
Growing up inside the Rooney family meant growing up inside American sports royalty. The Rooneys are an Irish-American family whose name has been tied to Pittsburgh’s civic identity since the 1800s, and the Steelers’ six Super Bowl titles were won under family stewardship.
Despite that pedigree, Bridget Rooney never sought celebrity. She briefly tried acting, with a single credited appearance in the 2011 short film Zombie or Not Zombie, but she did not pursue a Hollywood career. Her public profile comes almost entirely from two relationships: a brief mid-1990s relationship with Kevin Costner and her 2005 marriage to Bill Koch.
What Is Bridget Rooney’s Net Worth?
Here is the direct answer: Bridget Rooney’s exact net worth is not publicly disclosed, and no verified figure exists.
This deserves emphasis because the internet is full of celebrity net worth pages that assign precise dollar amounts to private individuals with no disclosed income and no public company filings. For Bridget Rooney, those numbers are guesswork. She has never been an executive of a public company and never sold a publicly documented asset that analysts could value.
What can be said with confidence is directional rather than numerical:
- Family wealth: The Rooney family has owned the Pittsburgh Steelers since its founding in 1933. NFL franchises are valued in the billions today, and family members have benefited across generations. Bridget’s personal stake, if any, in that ownership is not public.
- Marital wealth: Her husband, Bill Koch, is a documented billionaire. He founded the Oxbow Group and Oxbow Carbon, energy companies generating annual revenues reported above $2 billion, and won the America’s Cup as a yachtsman in 1992. Assets held jointly or provided through the marriage place the household firmly in the billionaire tier.
- Personal wealth: Separate from family and marital wealth, Bridget’s own independent net worth is unknown. She co-founded Oxbridge Academy, a private school, which is a philanthropic rather than profit-maximizing venture.
Readers searching for “bridget rooney net worth 2026” should treat any site that offers a single confident number with skepticism. The honest answer is that she is a member of two extraordinarily wealthy families whose combined resources are measured in billions, while her individual, personal fortune has never been made public.
What Is Bridget Rooney’s Family Background?
Bridget Rooney’s family background is the Pittsburgh Steelers dynasty. Her grandfather, Art Rooney Sr. (1901-1988), founded the team in 1933, and the Rooney family has remained central to the franchise and to Pittsburgh civic life ever since.
- Grandfather: Art Rooney Sr., founder and original owner of the Pittsburgh Steelers.
- Father: Timothy James Rooney, a horse-racing and sports executive who ran Yonkers Raceway and the Palm Beach Kennel Club.
- Mother: June Marraccini Rooney.
- Extended family: Includes longtime Steelers chairman Dan Rooney and relatives active in sports ownership, diplomacy, and philanthropy.
What Happened Between Bridget Rooney and Kevin Costner?
The direct answer: Bridget Rooney and Kevin Costner had a brief relationship in the mid-1990s that resulted in the birth of their son, Liam Timothy Costner, in November 1996.
The timing placed the relationship in a turbulent chapter of Costner’s life. He was one of Hollywood’s most bankable stars at the time, fresh from Dances with Wolves and The Bodyguard, and was going through a highly public divorce from his first wife, Cindy Silva. His relationship with Bridget Rooney was short, lasting only a few months.
When Bridget became pregnant, the situation became complicated and public. Costner requested a paternity test before acknowledging the child, a decision that generated significant media coverage and placed Bridget and the unborn child at the center of a very public dispute. The test confirmed Costner as Liam’s father, and he subsequently provided financial support, reportedly including a trust fund to secure his son’s future.
What followed is notable for its discretion. Bridget Rooney did not give interviews, did not issue public statements, and did not attempt to capitalize on the attention. She and Costner arranged co-parenting privately, and Liam was raised almost entirely out of public view, a rarity among celebrity children.
Who Is Bridget Rooney’s Husband, Bill Koch?
The direct answer: Bridget Rooney has been married since 2005 to William Ingraham Koch, known as Bill Koch, an American billionaire businessman, sailor, and art collector born May 3, 1940.
Bill Koch is the younger brother of Charles and David Koch, and he built his fortune independently of his brothers’ political activities. Key facts about him include:
- Business: Founder of the Oxbow Group and Oxbow Carbon LLC, energy companies based in the West Palm Beach, Florida area, with annual revenues reported above $2 billion.
- Sport: A competitive yachtsman who won the America’s Cup in 1992.
- Collecting: A noted collector of art, wine, and historical artifacts.
- Prior marriages: Previously married to Joan Granlund and to Angela Browder Gauntt before marrying Bridget in 2005.
The 2005 wedding was held in Colorado, where Koch owns a ranch, and was a private, lavish affair. His brother David Koch served as best man, and press coverage at the time widely reported a 31-carat yellow diamond engagement ring from diamond dealer Francois Graff.
The marriage united two powerful American dynasties: the Rooney name from professional sports and the Koch name from industrial wealth. Despite a 22-year age difference, the couple has maintained a strong union for two decades, and Bridget now goes by Bridget Rooney Koch.
How Many Children Does Bridget Rooney Have?
Bridget Rooney has two children from two relationships:
- Liam Timothy Costner, born November 1996, from her relationship with Kevin Costner. Liam has grown up almost entirely out of public view and has pursued work outside the entertainment industry.
- Kaitlin Koch, born in 2006, her daughter with Bill Koch, raised in Palm Beach, Florida, away from media attention.
What Does Bridget Rooney Do Now?
Bridget Rooney’s most significant public undertaking is Oxbridge Academy, the private college-preparatory school in Palm Beach, Florida, that she co-founded with Bill Koch in 2011. The school sits at the center of the couple’s philanthropic identity in South Florida and fits the pattern of both families: the Rooneys’ tradition of community leadership in Pittsburgh and the Kochs’ history of large-scale institutional giving.
Beyond Oxbridge Academy, Bridget maintains a low profile. She does not grant interviews and appears in the press only occasionally at Palm Beach charity events. Her biography, in short, is one of inherited prominence deliberately kept out of the spotlight.
Bridget Rooney: Quick Facts
| Fact | Detail |
|---|---|
| Full name | Bridget Rooney Koch |
| Born | 1962, California, United States |
| Nationality | American |
| Parents | Timothy James Rooney and June Marraccini |
| Grandfather | Art Rooney Sr., founder of the Pittsburgh Steelers (1933) |
| Son | Liam Timothy Costner (born November 1996), with Kevin Costner |
| Husband | Bill Koch (married 2005, Colorado) |
| Daughter | Kaitlin Koch (born 2006), with Bill Koch |
| Known for | Steelers heiress, mother of Liam Costner, wife of Bill Koch, co-founder of Oxbridge Academy |
| Net worth | Not publicly disclosed; no verified figure exists |
| Residence | Palm Beach, Florida |
Why Does Bridget Rooney’s Story Still Attract Attention?
Few biographies touch as many distinct American power centers as Bridget Rooney’s. She connects the NFL’s founding era through her grandfather, 1990s Hollywood through Kevin Costner, and modern industrial wealth through the Koch family. Added to that is the privacy paradox: the less a prominent person says publicly, the more curiosity grows, and that scarcity is also why conflicting birth dates and invented net worth figures keep spreading online.
For context on how similarly private figures connected to famous partners are profiled, DigitalGeekSpot covers celebrity biographies with the same care for verified facts. Related reads include the profile of Dixie Brubaker, covering marriage, divorce, daughter, and net worth and Shamicka Gibbs, both of which, like this article, separate documented biography from speculation.
Frequently Asked Questions
What is Bridget Rooney’s net worth in 2026?
There is no verified public figure. She has never disclosed her personal finances, and any specific dollar amount published online is an unverified estimate. Her family background and marriage place her household in the billionaire tier, but her individual net worth is not publicly known.
Who is Bridget Rooney?
An American heiress, occasional actress, and philanthropist. She is the granddaughter of Pittsburgh Steelers founder Art Rooney Sr., the mother of Liam Costner with actor Kevin Costner, and the wife of billionaire businessman Bill Koch.
Were Bridget Rooney and Kevin Costner married?
No. They had a brief relationship in the mid-1990s but never married. Their son, Liam Timothy Costner, was born in November 1996.
Is Bridget Rooney still married to Bill Koch?
Yes. They married in Colorado in 2005 and remain together, living in Palm Beach, Florida, with their daughter Kaitlin.
How old is Bridget Rooney?
She was born in 1962, which makes her 64 years old as of 2026. Some online sources report differing exact dates, but 1962 is the consistently reported birth year.
What is Bridget Rooney’s relationship to the Pittsburgh Steelers?
She is the granddaughter of Art Rooney Sr., who founded the Steelers in 1933. The Rooney family has owned and led the franchise across generations.
Does Bridget Rooney have children?
Yes, two. Her son Liam Timothy Costner (born 1996) is with Kevin Costner, and her daughter Kaitlin Koch (born 2006) is with her husband Bill Koch. Both have been raised largely away from media attention.
What is Oxbridge Academy?
Oxbridge Academy is a private college-preparatory school in Palm Beach, Florida, co-founded by Bridget Rooney and Bill Koch in 2011. It is the couple’s most prominent philanthropic undertaking.
