HNTB Corporation is an employee-owned infrastructure firm serving public and private owners and contractors. With 105 years of service in the United States, HNTB understands the life cycle of infrastructure and addresses clients’ most complex technical, financial and operational challenges. Professionals nationwide deliver a full range of infrastructure-related services, including award-winning planning, design, and program and construction management

Main: (816) 527-2136

Employees:  4,500

Locations:   Headquarters: Kansas City

with offices across the country.


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Why Kansas City?

For more than a century, HNTB has called Kansas City its home. As the firm's headquarters, Kansas City is conveniently located for our clients, partners and suppliers. The region has a wealth of eager employees -- across a range of disciplines -- who come to work every day wanting to make a difference and contribute.

And fun fact, In 2018, employee-owned HNTB was recognized as one of the top 10 places to work in Kansas City by the Kansas City Business Journal.

Please share a handful of projects that represent the work of HNTB.

Levi's Stadium


Innovation and collaboration team-up to realize owner’s vision to deliver ultimate 49ers fan experience.


The $1.2 billion Levi’s Stadium, designed by HNTB, is one of the most innovative and technologically advanced stadiums in the NFL today. Delivered on budget and on schedule, the home of the San Francisco 49ers is the first new-construction NFL stadium to achieve LEED® Gold certification.


To achieve the premium design and express the franchise’s distinctive character, the project team formed a “creative council,” which informed the design of premium spaces and resulted in each club feeling like the sponsor’s brand.


The stadium was delivered under a first-of-its-kind hybrid design-build model, which thrives on intense owner-project team collaboration. The heightened collaboration accelerated an aggressive schedule. Construction started in April 2012, and Levi’s Stadium opened July 17, 2014, becoming the NFL’s fastest-constructed stadium with:

  • 68,500 seats that can expand to 72,000

  • 9,000 club seats

  • Nine club spaces

  • 176 luxury suites

  • Five-star dining, spectacular views, upscale bars

  • A lower seating bowl that is among the NFL’s largest

  • State-of-the-art support, food service, engineering, locker and training facilities

  • Expandable outdoor entertainment venue

Johnson County Gateway Interchange


Managing Kansas Department of Transportation's first-ever design-build project.

HNTB is serving as project manager consultant on the mega Johnson County Gateway Interchange, the Kansas Department of Transportation’s largest and first-ever design-build project. The critical interchange project provides more efficient movement as commuters navigate changes between I-435, I-35 and Kansas Highway 10.


In the project’s early stages, HNTB assisted KDOT with initial conceptual planning and preliminary design, helped develop the state’s first design-build RFP and facilitated the procurement process. As the state’s project management consultant, HNTB is providing design, construction, communication and administrative oversight during construction. nnThe Johnson Country Gateway Interchange, a critical hub for regional transportation and economic growth, will ensure safe and efficient travel for daily traffic, which is estimated to grow to 380,000 vehicles by 2040.

Denver International Airport Hotel & Transit Center  


HNTB's program management helps Denver achieve a first: an integrated hotel and public transit center connected to an airport terminal. 


HNTB, as the part of the program management team for the Denver International Airport Hotel and Transit Center, has been involved since the inception of the South Terminal Redevelopment Program in 2009. The firm’s history with the project begins with initial master planning and extends through construction.


During design, HNTB leveraged building information modeling technology for spatial coordination, clash detection, structural design analysis, design review, collaboration, cost analysis and construction scheduling.


The Hotel and Transit Center provides lodging, conference space and commuter rail service to and from downtown Denver. It is the DEN’s largest project to date and the first time an integrated hotel and public transit center have been connected directly to an airport terminal.


The Hotel and Transit Center is a critical step toward enhancing DEN’s competitive standing as a leading global airport and positioning the facility for continued growth.

Stan Musial Veterans Memorial Bridge


Helping the Missouri-Illinois bridge open at nearly half its original estimate.

The Missouri and Illinois departments of transportation retained HNTB as lead designer on the Stan Musial Veterans Memorial Bridge — a 1,500-foot Mississippi River crossing — and its approach structures between St. Louis, Missouri, and St. Clair County, Illinois.


To bring the project’s cost within budget, HNTB identified the real needs and aligned them with budgetary and schedule constraints. Using its understanding of wind effects, river currents and soil on Mississippi Bridges and its long history of cable-stayed bridge work, HNTB produced an iconic design in 11 months.


To deliver a safer bridge but avoid unnecessary costs, HNTB used the conditional mean spectrum, a seismic analysis commonly used on buildings but never on a bridge. And, by introducing the alternative technical concept contracting method, HNTB helped the bi-state owners increase competition, efficiencies and constructibility. Smooth construction led to on-time, on-budget delivery of the third-longest cable-stayed bridge in the United States.

SR 99 Alaskan Way Tunnel


Construction, testing and commissioning for the WSDOT SR 99 Alaskan Way tunnel.

HNTB designed the permanent structures and facilities, including the tunnel liner, interior stacked roadway structure, approach cut-and-cover tunnels, approach roadways and operations buildings located at each portal.


Designed to enhance safety and emergency vehicle access, the SR 99 Tunnel features a two-level roadway tunnel to replace the aging, earthquake-damaged Alaskan Way Viaduct.


At 57.5 feet in diameter and nearly 2 miles long, the tunnel in downtown Seattle is the world's second-largest soft-ground, machine-bored tunnel. It also features:

  • State-of-the-art ventilation, fire detection and suppression systems 

  • An emergency egress system with its own ventilation system

  • A security system with closed-circuit TVs

  • An intelligent transportation system with variable message signs


From a mobility perspective, the tunnel creates a convenient and efficient north-south passage, and from a real estate perspective, it will be instrumental in transforming the downtown waterfront, making it a much more residential, commercial and tourist-friendly environment. The tunnel also frees up precious downtown waterfront property where the old viaduct sat and minimizes construction disruption.
1200 Main Street, Suite 230
Kansas City, MO 64105