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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Building the longest bridge on the nation's longest continuous section of new interstate highway in an environmentally sensitive area, all on an accelerated schedule, posed a special set of challenges. Add in variable rock depth in a seismic zone and months of sustained flooding, among other c o n s t r u c t i o n c h a l l e n g e s , a n d t h e Interstate 69 (I-69) Twin Bridges over the Patoka River has proven a unique project. The new stretch of I-69 between Indianapolis and Evansville, Ind., is widely regarded as a key component to the future economic vitality of southwestern Indiana, and will connect an entire region with improved access to jobs, education, and healthcare. A vision discussed for decades culminated in the 2003 Tier 1 Final Environmental Impact Statement, which was approved by the Federal Highway Administration with a 2004 Record of Decision. Environmental, Historic Context As part of the project's environmental commitments, the Indiana Department of Transportation (INDOT) agreed to span the entire 4400-ft-wide floodplain at the Patoka River National Wildlife Refuge and Management Area. At nearly a mile long, the bridge would be unique outside of coastal areas or navigable river crossings. profile I-69 TWIN BRIDGES OvER THE PATOkA RIvER / PIKE-GIBSON COUNTY LINE, IND. BRIDGE DESIGN ENGINEER: Janssen & Spaans Engineering Inc., Indianapolis, Ind. OTHER CONSULTANTS: Parsons Brinckerhoff, Indianapolis, Ind. PRIME CONTRACTOR: Kokosing Construction Company, Columbus, Ohio CONCRETE SUPPLIER: Irving Materials Inc., Petersburg and Fort Branch, Ind. PRECASTER: Prestress Services Industries LLC, Lexington, Ky., a PCI-certified producer As the seasons changed, so too did the I-69 Bridges over the Patoka River floodplain as shown from the same elevated position in late August, mid-October and late November of 2012. Photos: Bernardin Lochmueller & Associates. I-69 Twin Bridges over the Patoka River by Samuel Sarvis, Indiana Department of Transportation Many challenges overcome for longest bridge on longest new section of interstate 14 | ASPIRE , Spring 2013 P R O J E C T AspireBook_Spr13.indb 14 4/1/13 11:02 AM

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