THE CONCRETE BRIDGE MAGAZINE

SUMMER 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/306885

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22 | ASPIRE , Summer 2008 Hurricane Ivan struck Florida's coast in September 2004 near Pensacola with devastating results. More than 50 spans of the existing 3-mile-long, I-10 bridges across Escambia Bay were washed into the bay and another 60 were permanently dislocated. In order to reopen I-10 to the public as quickly as possible, missing spans on the westbound bridge were replaced with entire spans from the more heavily damaged eastbound bridge. With the westbound bridge reopened, work shifted to the eastbound bridge. By replacing the missing spans of the superstructure with a temporary metal structure, the eastbound bridge was brought back into service, but for only one lane of traffic. T h e F l o r i d a D e p a r t m e n t o f Transportation (FDOT) quickly released a request for proposals (RFP) for the design-build replacement of the I-10 bridges. The request mandated that all traffic be moved onto the new structure by the end of 2006, and that the bridges be brought to their final condition consisting of three 12-ft-wide lanes of traffic with two 10-ft-wide shoulders no later than the end of 2007. The width of this typical section allowed for one bridge to temporarily carry four 12-ft-wide lanes and a center barrier until the second structure was finished. design-Build approach With notice to proceed given on April profile i -10 Bridge rePlaC eMenT / ESCAmbIA bAy, flA. EnginEEr: Pb Americas, tampa, fla. PrimE ContraCtor: tidewater Skanska flatiron, milton, fla. PrECaStErS: Standard Concrete Products Inc., tampa, fla., a PCI-certified producer; Gulf Coast Pre-Stress Inc., Pass Christian, miss., a PCI-certified producer PoSt-tEnSioning ContraCtor: VSl, hanover, md. AWARDS: 2007 PCI Bridge Design Award for the Best Bridge with Spans Greater than 150 ft. INNOVatIVE SOLutIONS FOr RApID CONsTRUCTION by Charles Rudie, John Poulson, Victor Ryzhikov, and Theodore Molas, PB Americas replacement of the i-10 Bridges across Escambia Bay Following Hurricane Ivan, emergency repairs were made to the westbound bridge using spans from the eastbound bridge. All Photos: Charles Rudie, PB. Aspire_sum08.indb 22 6/24/08 1:40:25 PM

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