THE CONCRETE BRIDGE MAGAZINE

WINTER 2008

ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.

Issue link: http://www.aspiremagazinebyengineers.com/i/306966

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The superstructure of the 504-ft-long main span consists of four variable-depth precast concrete segmental box girders supported on 70-ft-tall piers on each side of the river. Photos: FIGG. 20 | ASPIRE , Winter 2008 P R O J E C T The new St. Anthony Falls (I-35W) Bridge will be a modern concrete bridge spanning the Mississippi River with a 504-ft-long main span and a focus on the future. On October 8, 2007, the Minnesota Department of Transportation (Mn/DOT) awarded the design/build contract for this important bridge to a joint venture of Flatiron Constructors Inc. and Manson Construction Company, with Johnson Brothers in a key support role. FIGG is leading the design phase of the project for the construction joint venture and is engineer of record for A Modern Concrete Bridge Spanning the Mississippi River in Minneapolis the new bridge, with TKDA of St. Paul, Minnesota, responsible for general civil, storm water/drainage, 2 nd Street overpass, and other engineering support services. Oslund and Associates from Minneapolis is responsible for the landscape design. The successful past working relationships between members of the team on other design/build bridges over major waterways helped prepare them for the challenge of completing the design and construction of this $234 million project in 15 months, or by December 24, 2008. Construction activities officially began on site November 1, 2007, with the drilling of a test foundation shaft. Mn/DOT and the design/build team are committed to creating a new bridge with the top priorities of safety, quality, and a world-class design that reflects the community's values. As the design was underway, the community received an opportunity to select their preferences on various aesthetic aspects during a full day FIGG Bridge Design Charette ™ held on October 24, 2007. A cross section of the community including residents, business people, government officials, representatives of the cultural arts, University of Minneapolis, and others, voted on a curved pier shape, open railing for new vistas, bridge color of white, native stone gabion walls, and feature lighting. The bridge will be 1219 ft long with twin structures, each 90-ft 4-in. wide, using two box girders per structure; thereby, providing multiple levels of The New St. Anthony FAllS Bridge by Jon Chiglo, Minnesota Department of Transportation and Linda Figg, FIGG 10973_ASPIRE_win08.indb 20 12/12/07 3:29:05 PM

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