A full service, heavy civil contractor serving our industry for 70 years.

How We Began

IHC began in the construction business in Michigan in 1947. This post-war and pre-Interstate era provided ample room for a small contractor with limited resources to prosper. Starting with small jobs including highway widening, subdivisions, basements, and installing house sewer leads, we grew rapidly to become one of the leading contractors building the interstate & primary highway program in Michigan.

Heading West to the Rockies

In 1976, prepared for geographic diversification, IHC won a runway re-construction project at Denver's Stapleton International Airport. The project was an award-winning succcess, influencing our decision to establish a regional office in Denver. More work quickly followed and would mark the beginning of a long relationship building for the Colorado Department of Transportation, and many other agencies in the Rocky Mountain West.

Expanding Operations Southwest

The Denver regional office, while maintaining its Rocky Mountain operations, further expanded in 1980 to Texas, building an early section of I-635 just north of the Dallas/Fort Worth International Airport. In 1983, the corporate office was relocated from Michigan to Denver, leaving a local presence in the form of a divisional office in Owosso, Michigan.

Ralph C. Wilson, Jr. Purchases IHC

In 1983, Ralph C. Wilson Jr. purchased IHC and began a new 30 year chapter of leadership with our company. He played a major role in shaping our company into the business it is today.

The Brand New Denver International Airport (DIA)

By 1990, IHC had constructed over $300 million in airfield and highway projects throughout Texas and Oklahoma. As the Texas marketplace began to slow, our Texas team and resources were redeployed to Denver marking the launch of an intense five-year building program at the new $5B Denver International Airport. In those five years, IHC constructed many major components of the airfield and the airport’s surrounding infrastructure.

Crossing the Southern Border


In 1995, we teamed with Cemex, a Mexican-based material supplier, and brought slipform concrete pavement technology to Mexico for the first time. Together we built several projects in central Mexico, the most noteable project being the Guadalajara to Tepic concession highway.

Continued Ventures in the Southwest

With the resurgence of the Texas market in 2002, we re-established our Southwest Division primarily serving Texas, Arkansas and Oklahoma. Our Southwest Division has completed small projects up to very large complex projects, including projects at Vance Air Force Base, Houston Port Authority, and Port of Long Beach, California.

Regional Diversity of Today

We currently have four regional operating divisions building a wide range of projects in the Rocky Mountain, Midwest and Southwestern United States.

Paving I-275 Michigan, 1976

Stapleton International Airport

Denver International Airport

Have questions or need additional information? Visit our contact page for a list of contacts.

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