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Since its founding in 1947, Flatiron has completed major infrastructure projects across North America.

Named after the unique rock formations found near Boulder, Colorado, Flatiron was founded in 1947 as a materials company. In the 1980s, the company secured a series of contracts along Interstate 70 through the Glenwood Canyon Corridor, Colorado’s most scenic stretch of interstate. Flatiron was recognized for its work on I-70 with awards that catapulted the company into national prominence.

With its reputation secured, Flatiron expanded into 22Bet casinonew markets in the U.S. in the years that followed. Flatiron opened additional regional offices in California in the 1990s, and has since opened additional offices across the North America. Flatiron now has more than 2,500 employees and has completed projects in every region of the United States and in many Canadian provinces.

Flatiron Company Timeline
Bridges to Prosperity


  • Operations under six divisions in the U.S. and Canada
  • More than 2,500 employees
  • Successful completion of more than 270 projects in North America, worth more than $12 billion in total. Design-build and public-private partnership experts, with P3 projects totaling $5.5 billion and design-build projects totaling $8.5 billion.
  • Employer of choice, earning numerous employer awards.
  • Partner of choice, winning accolades for partnering excellence from owners and industry associations
  • Employee volunteers have built more than 16 footbridges in rural Central America with Bridges to Prosperity
Presidio Parkway, San Francisco


  • 22bet reviewE.E. Cruz joins Flatiron and focuses on Northeast Market
  • Secures company’s first U.S. public-private partnership project, the Presidio Parkway in San Francisco
  • Completes Northwest Anthony Henday Drive project and begins work on final, Northeast section of Edmonton's multi-billion-dollar ring road
  • Secures national awards for project delivery, partnering, safety excellence and community involvement
  • Recognized as a top employer in Canada with multiple awards
  • Secures contract for segment of first U.S. high speed rail line
  • Secures first project in Montreal, $2 billion Champlain Bridge
Expansion across North America


  • Expansion continues with new major projects underway in the Carolinas, Florida, Texas, Louisiana and Utah
  • Opens office in Canada, begins work on company’s first public-private partnership project
  • Joins the HOCHTIEF family
  • Delivers I-35W Bridge in Minneapolis three months ahead of schedule
  • Forms partnership with non-profit Bridges to Prosperity to build footbridges in Central America, connecting isolated communities to education, commerce and healthcare
Expansion across North America


  • Expands into California, 22bet sports betting appwith continued growth in Colorado
  • Secures design-build project in Maine, the company's and the state’s first design-build endeavors
Glenwood Canyon Corridor - Garfield & Eagle Counties, Colorado


  • Wins first major civil construction project in Colorado, and over the next 10 years, builds series of projects in Glenwood Canyon that earn industry accolades.
Flatiron Rock Formations - Boulder, CO


  • Founded in Boulder, Colorado, as an aggregates and materials company, and named for the unique local rock formations.
Flatiron Firsts
Flatiron has constructed many of North America’s signature infrastructure projects.
Whether erecting the largest precast bridge segments in the world or building the longest
cable-stayed bridges on the continent, Flatiron is known for building signature projects.

Continent’s three longest cable-stayed spans

(at time of construction)

Port Mann Bridge
Vancouver, BC

John James Audubon Bridge
St. Francisville, LA

Cooper River Bridge
Charleston, SC

World’s longest stress-ribbon bridge

(at time of construction)

Lake Hodges Pedestrian Bridge
San Diego, California

First suspension bridge built in America in 35 years

Carquinez Suspension Bridge
22bet sportsbook reviewCrockett, California

World’s largest precast bridge segments

(at time of construction)

San Francisco Oakland Bay Bridge
San Francisco, California

First incrementally launched bridge on a curve

Kicking Horse Pass
Golden, British Columbia

Largest bridge deck in Alberta

Athabasca River Bridge
Fort McMurray, Alberta