THE CONCRETE BRIDGE MAGAZINE

SPRING 2007

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.

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30 | ASPIRE , Spring 2007 Executives at CSX Transportation needed a fast replacement when Hurricane Katrina destroyed the superstructure of their 10,050-ft-long railroad bridge across Bay St. Louis, Mississippi. Close communication and cooperation among the railroad officials, designer, fabricators, and contractors accomplished this task in only 156 days from the time of damage until it opened to traffic, beating the already tight schedule requested. A design featuring AASHTO Type IV precast, prestressed concrete beams contributed to this rapid reconstruction. On August 29, 2005, the bridge superstructure was knocked out by one of the worst hurricanes in the nation's history. The key heavy-freight railway bridge carried 25 to 35 trains per day and served as the main corridor from New Orleans through Biloxi, Mississippi, to Mobile, Alabama. The 30-ft storm surge over-topped the entire length of the bridge, wrenching all but three of the 165 spans from the piers. Miraculously, the 289-ft-long center swing-span truss weathered the waves, although there was track and operating system damage. Overall, about 75 miles of track and six other significant bridges were damaged on the line. These repairs were completed before the Bay St. Louis Bridge was opened, according to Gary Sease of CSX Transportation. profile CSX tranSPOrtatiOn railrOad Bridge / BAy ST. lOuIS, mISSISSIPPI EnginEEr: STV/Ralph whitehead Associates Inc., Jacksonville, Fla. PrimE ContraCtors: Scott Bridge Co., Opelika, Ala., and Jordan Pile Driving, Inc., mobile, Ala. Pr ECastErs: Sherman Prestressed Concrete, Pelham, Ala., and madison materials Co., Ridgeland, miss., PCI-Certified Producers Bri DgE DEsCriPtion: 10,050-ft precast concrete railroad bridge with ballasted deck hurricane-damaged Span replaced in 156 days by Stanley W. Woods Precast concrete girders and close cooperation between designer, fabricators, and contractors ensure critical railroad bridge returns to service quickly The 10,050-ft-long CSX Transportation railroad bridge in Bay St. Louis, Mississippi, connecting key transportation hubs, was reconstructed in only 156 days after Hurricane Katrina destroyed the original structure. ASPIRE_spring_2007.indb 30 3/7/07 12:32:51 PM

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