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Bridges

Flatiron is one of the largest bridge builders in the country and is proud to have constructed some of our nation's landmarks. Flatiron has successfully completed segmental, bascule, cable-stayed and suspension bridges for clients from coast to coast.

Learn more in our Bridges, Highways and Roads brochure.

4th Street Bridge

4th Street Bridge - Pueblo, CO

Fourth Street is a major east-west route through Pueblo, Colo. connecting Interstate 25, downtown Pueblo, and western residential neighborhoods The 4th Street Bridge carries State Highway 96A across a city street, the Arkansas River, and the Union Pacific and Burlington…

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Athabasca River Bridge

Athabasca River Bridge - Ft. McMurray, Alberta

Flatiron constructed the Athabasca River Bridge in Ft. McMurray, Alberta,approximately 270 miles north of Edmonton. The 108-foot-wide, 1,548-foot-long bridge deck is the largest in Alberta. The stout structure was built to accommodate more than three times the average…

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Big Bear Bridge

Big Bear Bridge - Big Bear, CA

The Big Bear Bridge replacement project along California State Route 18 is located in the San Bernardino Mountains, nestled in a valley surrounded by steep terrain and an environmentally sensitive wilderness. Now a popular year round resort destination, the community of Big…

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Carquinez Suspension Bridge

Carquinez Suspension Bridge - Crockett, CA

The new Carquinez Suspension Bridge carries traffic westbound on I-80 over the Carquinez Straights just north of San Francisco. This new three-span 3,465-foot-long structure is North America's first suspension bridge of its kind to be built in 35 years. At bid time, it…

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Circle Drive South

Circle Drive South - Saskatoon, Saskatchewan (Canada)

Circle Drive is a major road constructed as a ring road in Saskatoon, Saskatchewan, and is a part of the Provincial and National Highway systems. Graham-Flatiron executed the first design-build contract and the largest single project in the city's history-the final link…

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Cooper River Bridge (Arthur Ravenel Bridge)

Cooper River Bridge (Arthur Ravenel Bridge) - Charleston, SC

The Cooper River Bridge was the longest cable-stayed bridge on the continent at the time of construction, spanning 1,546 feet across the Cooper River in Charleston, South Carolina. The new cable-stayed bridge, named the Arthur Ravenel Bridge, is supported by two…

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Drayton Valley Bridge

Drayton Valley Bridge - Drayton Valley, Alberta

Flatiron reconstructed the Drayton Valley Bridge over the North Saskatchewan River and improved 8.5 kilometers of Highway 22 east of the bridge in Drayton Valley, Alberta, an oil industry hub approximately 90 miles southwest of Edmonton. The new bridge features a wider,…

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I-10 Bridges over Escambia Bay

I-10 Bridges over Escambia Bay - Pensacola, FL

In September 2004, Hurricane Ivan struck the Gulf Coast and severely damaged the I-10 bridges over Escambia Bay. Early in 2005, the Florida Department of Transportation (FDOT) awarded the contract to replace the damaged bridges. Each 2.6-mile bridge consists of three…

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I-35W (St. Anthony Falls) Bridge

I-35W (St. Anthony Falls) Bridge - Minneapolis, Minnesota

Following the tragic collapse of the I-35W Bridge in Minneapolis in August of 2007, Flatiron formed a joint venture team to design and build the replacement bridge for the Minnesota Department of Transportation. After receiving the highest score on the proposal and subsequently…

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I-80 Bridges over Weber River

I-80 Bridges over Weber River - Echo Junction, Utah

Flatiron removed and replaced the eastbound and westbound structures over the Weber River on I-80 at Mile Post 168.5, near Echo Junction, Utah. The $5 million design-build project was Flatiron's first Accelerated Bridge Construction project. Accelerated Bridge Construction…

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John James Audubon Bridge

John James Audubon Bridge - St. Francisville, LA

Flatiron designed and built a new cable-stayed bridge across the Mississippi River. The bridge, to be formally called the John James Audubon Bridge, replaced the ferry system and connects St. Francisville with New Roads just north of Baton Rouge, Louisiana. Work…

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John's Pass Bascule Bridge

John's Pass Bascule Bridge - Clearwater, FL

John's Pass Bridge connects Treasure Island with Madeira Beach along Florida's pristine west coast. Currently the bridge carries approximately 17,000 vehicles per day. John's Pass Bridge has undergone two major repairs over the past two decades and will now be replaced…

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Lake Champlain Bridge (NY Route 185/VT Route 17)

Lake Champlain Bridge (NY Route 185/VT Route 17) - Essex County, N.Y. and Addison, Vt.

Flatiron constructed the new Lake Champlain Bridge in northern New York State. The new two-lane steel arch-span structure replaces a structurally deficient two-lane bridge demolished in December 2009. Spanning Lake Champlain, the new 2,200-foot-long bridge reconnects Essex…

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Lake Hodges Pedestrian Bridge

Lake Hodges Pedestrian Bridge - San Diego, CA

In between Escondido and Rancho Bernardo, Calif., Flatiron constructed the Lake Hodges Bicycle/Pedestrian Bridge, a 990-foot long stress-ribbon bridge designed to connect the expansive network of trails on both shores of Lake Hodges with minimal impact on the surrounding…

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North Torrey Pines Bridge

North Torrey Pines Bridge - San Diego, CA

The North Torrey Pines Bridge's unique location along coastal Highway 101 over an environmentally sensitive lagoon required innovative solutions in regards to both bridge design and construction. The bridge was designed with just three spans to enable better natural tidal flushing…

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Point Bonita Lighthouse Pedestrian Bridge

Point Bonita Lighthouse Pedestrian Bridge - San Francisco, California

Flatiron replaced the historic Point Bonita Lighthouse Suspension Pedestrian Bridge in the Golden Gate National Recreation Area. The lighthouse, moved to its current location in 1877, was previously accessible via a suspension bridge built in 1954 designed as a model of the…

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Port Mann Bridge/Highway 1

Port Mann Bridge/Highway 1 - Vancouver, British Columbia, Canada

Flatiron was part of the Kiewit/Flatiron General Partnership that designed and built the new Port Mann Bridge over the Fraser River in Vancouver, British Columbia. The new cable-stayed bridge increased the crossing's capacity from five to 10 lanes.The North and South main…

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San Francisco-Oakland Bay Bridge Skyway

San Francisco-Oakland Bay Bridge Skyway - Oakland, CA

Flatiron was a part of the joint venture team that constructed a portion of the east span of the San Francisco-Oakland Bay Bridge known as the Skyway, the largest contract ever awarded by the California Department of Transportation. The project consisted of two precast segmental…

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Santa Maria Bridge

Santa Maria Bridge - Santa Maria, CA

The project substantially widened an existing 2100-foot-long separate span, four-land bridge built in the early 1960s by connecting the separate spans in the middle. The roadway was widened to six lanes in the city of Santa Maria leading up to the bridge, but the structure…

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Washington Bypass

Washington Bypass - Washington, North Carolina

The North Carolina Department of Transportation commissioned the joint venture team of Flatiron and United Contractors to design and build a new $192 million 6.8-mile Highway 17 Bypass around Washington and Chocowinity, N.C. The new bypass was completed eight months early and…

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Yadkin River Bridge

Yadkin River Bridge - Salisbury, North Carolina

Flatiron reconstructed a deteriorating, 55-year-old segment of Interstate 85 over the Yadkin River near Salisbury, N.C., about 40 miles north of Charlotte. The congested interstate is the most direct route between Atlanta and Richmond and carries over 80,000 vehicles…

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