Building Strong, Then and Now

With the field resources and equipment to handle any project, Wanzek has spent the last four decades focused on our customers. Our reputation of excellence has allowed us substantial growth. Headquartered in Fargo, North Dakota, Wanzek was founded on heavy/civil and concrete construction projects. By 2000 Wanzek established a large crane service division and a resume of projects for industrial and renewable clients across the Midwest. Today we are Building Strong in the industries of Power, Renewable Energy, Oil & Gas, Heavy/Civil and Industrial Agriculture.

With this strong foundation to work from we're equipped to bring experience and expertise to every project. We have built a team of hardworking, knowledgeable and dedicated people and the majority of our key personnel have been with us for 10, 15, or 20 plus years. Our team members are the most important part of our business and their skills, experience and dedication to excellence is what enables our success.

  • On September 14, 1971 Leo and Janet Wanzek founded Wanzek Construction, Inc. Leo is a graduate of North Dakota State University with a degree in Civil Engineering. Leo and wife Janet operated the company out of their Fargo, N.D. home.
  • Wanzek Construction is awarded its first contract from The U.S. Army Corps of Engineers. Wanzek completes a visitor's center on Lake Ashtabula near Valley City, N.D. In subsequent years, Wanzek completes dozens of heavy/civil and municipal projects in the state.

  • Wanzek Construction builds a corporate office outside of West Fargo on a 30-acre property.
  • Wanzek expands on its foundation of building bridges and municipal projects to take advantage of opportunities in the industrial and millwright markets.
  • American Crystal Sugar (ACS) of Moorhead, Minn. hires Wanzek as the site work and foundation contractor on its first two sugar beet storage buildings in Moorhead. The project is the beginning of a long-term relationship that continues today. In addition to building similar freezer buildings at every ACS plant, Wanzek regularly completes capital and maintenance projects.
  • Wanzek adds a Komatsu PC-300 excavator to its equipment fleet to improve service. The excavator is one of the first of its kind in the Fargo-Moorhead area. Today Wanzek has more than 500 pieces of heavy equipment in its fleet.
  • Wanzek completes its first projects for the North Dakota Department of Transportation (NDDoT). Since then, the company has built dozens of NDDoT bridges across the state.
  • 1986 Jon Wanzek joins the Wanzek team. Jon completed his Bachelor's of Science degree in Civil Engineering at the University of Minnesota. His first major project is a railroad overpass bridge near Valley City, N.D. In 2007, Jon Wanzek is named the company's president.
  • Wanzek completes flood control projects for the cities of Devils Lake, N.D., Enderlin, N.D., Argusville, N.D. and Halstad, Minn.
  • Wanzek completes the highly meticulous task of removing an old metal deck from trusses on the Memorial Bridge between Bismarck and Mandan in North Dakota and replacing it with a concrete deck.
  • Wanzek is contracted by Wal-Mart to construct a new discount shopping center in Jamestown, N.D. The project leads to six others for Wal-Mart in Devil's Lake, N.D., Grand Forks, N.D., Dickinson, N.D., Fargo, N.D., Detroit Lakes, Minn. and Thief River Falls, Minn.
  • Wanzek becomes the general contractor for a 15MMGY plant in Claremont, Minn., for Al-Corn Clean Fuels. Wanzek creates an Ethanol Division and, over the years, expands its commitment to the industry. Today more than 400 craftspeople are involved in ethanol projects for Wanzek.
  • Wanzek constructs the foundation package for the new ProGold High Fructose Corn Syrup Plant in Wahpeton, N.D. Wanzek later lands the raw water intake and effluent discharge system project for the plant.
  • 1996 Wanzek launches its Crane Service Division with the purchase of a new 70 ton Link Belt Truck Crane. Since then, the Crane Service Division has further developed, adding multiple cranes up to 660 ton lift capacity and employing several additional certified operators.
  • Wanzek builds a separate maintenance facility in West Fargo, N.D. to handle rapid growth in equipment maintenance and fleet storage needs. In addition more than 16,000 sq/ft have been added to the corporate office to keep up with sustained growth.
  • Wanzek enters the competition for wind energy construction projects. The company purchases its first Manitowoc M2250 300 ton crawler, a crane with tremendous lifting capacity and erects its first wind tower in Moorhead, Minn. Wanzek later adds four additional heavy-lift Terex-Demag Cranes to the fleet, solidifying the company as a major player in wind energy construction.
  • Wanzek adds Abengoa Bioenergy Corp., POET Energy, Archer Daniels Midland (ADM), Cargill, Seaboard Foods and VeraSun Energy to the client list. Wanzek continues to build positive client relationships in the ethanol and biodiesel industries and completes dozens of projects across the country.
  • Sustaining years of continued growth in wind energy construction, Wanzek makes its mark as an industry leader. Wanzek's notable clients include Duke Energy, Iberdrola, Montana-Dakota Utilities (MDU) and MidAmerican Energy.
  • Wanzek Construction is acquired by MasTec, Inc. (NYSE: MTZ), a leading specialty contractor for utilities, energy and communications companies. The acquisition provides for continued growth and synergy in Wanzek's future. Wanzek becomes a platform company within MasTec, but retains its name, culture and operating structure.


Our zero-injury philosophy and industry leading safety record enables us to consistently deliver the highest quality work.