Figure 4 - Concrete box girder segments were manufactured in a long line fashion in a casting yard adjacent to the bridge construction site. (Photo courtesy of FIGG).
Figure 8 - July 9, 2008 - Erection of the 504' main span began on May 25, 2008 and was completed just 47 days later, on July 10, placing 120 segments. Notice to proceed with the design/build contract to placing the last precast segments was nine months for this 10-lane interstate bridge. (Photo courtesy of FIGG.)
Figure 5 - Sculpted concrete piers 70' tall support the main span. Superstructure segments vary from 25' at the main piers to 11' deep at centerspan. (Photo courtesy of FIGG.
Figure 6 - June 19, 2008 - On a typical day, four precast segments were set. (Photo courtesy of FIGG.)
Figure 7 - Concrete segmental construction as a spectator sport - as many as 1,000 people lined the sidewalk of the adjacent 10th Avenue Bridge as the first superstructure segment was lifted on May 25, 2008. (Photo courtesy of FIGG).
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The Minnesota Department of Transportation created a vision for exceptional quality, aesthetics and speed in outlining the requirements for the new 10-lane Interstate bridge in Minneapolis. The 1,223' long I-35W St. Anthony Falls Bridge over the Mississippi River in Minneapolis, Minnesota is nearing completion. Notice to proceed with construction and access to the site was provided to the design/build team on October 15, 2008. Nine months later, the final segments in the 504' precast concrete segmental span were erected, on July 10, 2008. The bridge is on schedule to open to traffic in mid-September which will be only 11 months since notice to proceed and more than three months early.
For in depth coverage of the I-35W Bridge, see the Fall, 2008 issue of
ASPIRE.
Owner: Minnesota Department of Transportation
Designer: FIGGContractor: Flatiron/Manson
Construction Engineer: FIGGConstruction Engineering Inspection: FIGGFormwork for Precast Segments: EFCO
Post-Tensioning Materials: DSIBearings and Expansion Joints: Bearings – R J Watson;
Joints – D.S. BrownEposxy Supplier and Prepackaged Grout: Pilgrim
I-35W St. Anthony Falls Bridge, Minneapolis, Minnesota