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HNTB Corporation
Employee owned corporation
Industry Engineering & Architecture
Founded Kansas City, Missouri, United States (1914)
(as Harrington, Howard & Ash)
Headquarters Kansas City, Missouri, United States
Key people
Harvey Hammond, Chairman
Revenue IncreaseUS$ tba
IncreaseUS$ tba
IncreaseUS$ tba
Total assets IncreaseUS$ tba
Total equity IncreaseUS$ tba
Number of employees

HNTB Corporation is an architecture, civil engineering consulting and construction management firm that was founded in 1914.[1] Its headquarters are in Kansas City, Missouri, but the firm has numerous offices across the United States. The firm has designed many bridges, roadways, airports, professional sports stadiums and rail and transit systems across the United States and around the world.

HNTB in Kansas City. HNTB Headquarters Downtown Kansas City.


The firm started in 1914 as Harrington, Howard & Ash specializing in the design of moveable bridges.

In 1941 it changed its name to Howard, Needles, Tammen & Bergendoff.

In 1975 it merged with Kivett and Myers to form a sports architecture practice.

In 1982, it acquired the rail firm of Thomas K. Dyer adding track, signal, communications and traction power to its portfolio, thus positioning the firm to serve the rail industry.

In 1993 it formally changed its name to HNTB Corporation.

In 2000 the firm became employee-owned.


The current leadership of the company is as follows:[2]

Executive Chairman - Harvey Hammond, Jr.[3]
Executive Vice President - Paul Yarossi[4] - In 2012, Paul served as the Chairman of the American Railroad & Transportation Builders Association.[5] On March 5, 2011 he published an article in the New York Times titled "Born to Be an Engineer".[6]

  • Chief Executive Officer - Robert Slimp, PE[7]
  • Corporate President - Thomas O'Grady, PE[8]
  • Corporate Development President - Douglas Mann, FASLA

The company is split into six operating divisions led by a President as follows:[2]

  • Design Build - Led by John Friel, PE[9]
  • Northeast - Led by Steven McElligott, PE[10]
  • Southeast - Led by Michael Inabinet, PE[11]
  • Central - Led by Tom Ellis, PE[12]
  • Great Lakes - Led by Matthew Hintze, PE[13]
  • West - Led by Art Hadnett


The firm provides infrastructure solutions in a number of areas, as listed below:[14]



In 2014 Airport Business Magazine recognized two of the company's aviation experts, James Long PE[15] and Jennie Santoro,[16] with a “Top 40 Under 40” award. The annual award by the magazine recognizes 40 aviation industry professionals under the age of 40 for their academic, professional and community achievements.


Ted Zoli is currently the National Bridge Chief Engineer at HNTB. In 2012, he received Engineering News-Record’s Award of Excellence.[17]


The leader of the firms National Construction Management practice is Joseph Lawton, AIA, CCM[18]

Design build

Financial resources

Freight rail

High-Speed Rail

The company is a supporter of high-speed rail project.[19]


Intelligent Transportation Systems (ITS)


Program delivery


In 2012 the company was awarded a contract for the final design of the Green Line Extension project in Boston.[20]

In January 2015 Michael Townes joined the company as the national market sector leader for Transit. He will be based in the firm’s office in Arlington, Va. [21]



Matthew Click is the HNTB expert on Tolls, and claims to be one of the industry’s most recognized specialists in priced managed lanes, corridors and networks[22]



Nasri Munfah is the Chairman of HNTB Tunnel Services.[23]



The firm produces a number of publications.


Designer magazine showcases the projects, people and technologies that the company believes are key to the development of the nation's infrastructure.[24]


THINK is devoted to "exploring the complex opportunities and challenges of developing the nation's infrastructure".[25] It covers issues from financing to design, construction to security and technology to politics.

In Transit

InTransit offers government leaders and public transportation professionals a deeper look at the developments transforming public transportation systems.[26]

Transportation Point

Transportation Point gives transportation industry professionals an opportunity to take a deeper look at the developments transforming their industry.[27]

Aviation Insight

Aviation Insight gives airport and other aviation industry professionals an opportunity to take a deeper look at the developments transforming their industry.[28]


SOLVE examines the challenges of America’s infrastructure.[29]


In 2006 the American Public Works Association named the High Five Interchange as the "Public Works Project of the Year" for its massive size, its innovative design, the complexity and rapidity of its construction and the need it fulfilled for the community. HNTB Corporation received the award as the primary consultant, along with the Texas Department of Transportation as the managing agency and Zachry Construction Corporation as the primary contractor. The award was in recognition of their cooperative alliance in completing the project.[30]

The company won an award for the repair of the John E. Mathews Bridge after it was severely damaged by a ship impact in September 2013.[31]

In 2015 the company was ranked No.3 on a list for the World’s Top 10 Most Innovative Companies of 2015 for its design of Levi’s Stadium, home of the San Francisco 49ers.[32]




The High Five Interchange in Dallas, Texas. Designed by HNTB

Wildlife Crossing Design

  • In 2011, HNTB with Michael Van Valkenburgh & Associates (New York) (MVVA) won the ARC International Wildlife Crossing Infrastructure Design Competition. The wildlife crossing design by HNTB with MVVA features a single 100-m (328-ft) concrete span across an interstate highway. The crossing bridge is planted with a variety of vegetation types, including a pine-tree forest and meadow grasses, to attract different wildlife species to cross. The modular precast concrete design means that much of the bridge can be constructed offsite and moved into place, shortening crossing construction time and minimizing disruption to the traffic flow.


Light rail


Major League Baseball

National Football League

Minor League Baseball

College stadiums

Convention centers




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  33. ^ a b The fourth longest cable stayed span in North America.
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External links

  • Official website
  • Kansas City Biz Journal profile
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