THE CONCRETE BRIDGE MAGAZINE

WINTER 2015

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/439391

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PROJECT Cottonwood Creek Bridge Accelerated bridge construction speeds bridge replacement by Jason Langhammer, Garver Accelerated bridge construction (ABC) methods were used for the first time in Oklahoma in the replacement of the Cottonwood Creek Bridge, which transports State Highway (SH) 51 over Cottonwood Creek in Creek County, Okla. When comparing the ABC technique to conventional construction methods, it was estimated that the time needed ABC methodology seeks to reduce construction duration and impacts on traffic. Additional benefits include improving work zone safety, eliminating temporary roadway construction, decreasing post-construction repairs to detour routes, and reducing user costs. As bridge repair and replacement obsolete, Oklahoma Department of Transportation (ODOT) selected this site to consider ABC because of the site accessibility of the deteriorating bridge. To construct the new bridge on the existing alignment, the contractor had to first construct the substructure elements under the existing bridge—while it remained in service. ABC methodology seeks to reduce construction duration and impacts on traffic. Additional benefits include improving work zone safety, eliminating temporary roadway construction, decreasing post-construction repairs to detour routes, and reducing user costs. As birdge repair and replacement becomes increasingliy more important throughout the nation, transportation officials are looking to implement ABC methods. The original Cottonwood Creek ridge was built in 1961 and then it was deemed functionally obsolete, Oklahoma Department of Transportation (ODOT) selected this site to consider ABC because of the site accessibility of the deteriorating bridge. To construct the new bridge on the existing alignment, the contractor had to first construct the substructure elements under the existing bridge—while it remained in service. Oklahoma’s Decision ODOT recognizes the benefits of ABC and selected the Cottonwood Creek Bridge to serve as a pilot project to evaluate the benefits of ABC techniques for its state. Additionally, ODOT could apply the knowledge gained through this pilot project to other projects where ABC techniques are feasible and prudent. PROFILE COTTONWOOD CREEK BRIDGE / CREEK COUNTY, OKLAHOMA BRIDGE DESIGN ENGINEER: Garver, Tulsa, Okla. PRIME CONTRACTOR: Manhattan Road & Bridge Co., Tulsa, Okla. PRECASTER: Coreslab Structures, Tulsa, Okla.—a PCI-certified producer

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