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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Constructed in the early 1800s, the Ohio & Erie Canal carried freight and passengers from the small towns and farms between the Ohio River and Lake Erie. This then opened up Ohio to larger ports and cities to the east and south. Today, the surviving watered portion o f t h e c a n a l b e t w e e n A k ro n a n d Cleveland is managed by the National Park Service, including the aqueduct structure over T inkers Creek. The canal and the associated structures are major attractions in the 33,000-acre Cuyahoga Valley National Park. The aqueduct is the only one remaining of the four originally constructed along this stretch of the canal. It is listed on the National Register of Historic Places and is a contributing resource to the larger Ohio & Erie Canal National Historic Landmark District. A History of Repairs With less than 5 ft of vertical grade separation between the canal and Tinkers Creek, the aqueduct is subject to frequent flooding of the creek, exposing the structure to stream forces, scour, debris impact, and ice jams. As a result, on-going maintenance has been needed through the years. The aqueduct has been relocated, rehabilitated, and replaced several times, most notably in 1905 when a two-span iron truss supporting a timber plank trough was installed on the original masonry pier and abutments. In 2007, after more than 100 years of weathering and frequent flooding, the National Park Service was forced t o re m o v e t h e s t e e l a n d t i m b e r s u p e r s t r u c t u re . U n d e r e m e r g e n c y action, the canal was blocked off, a steel pipe conveyance system was installed to maintain water in the canal, and a new pedestrian bridge was constructed to restore towpath pedestrian traffic. Funding was then sought to design and construct a replacement aqueduct. Ultimately, the project was selected to receive funding through the American Resource and Recovery Act. profile OHIO & ERIE CANAL AQuEDuCT OVER TINKERS CREEK / CUyAHOGA VALLEy NATIONAL PARk, OHIO BRIDGE DESIGN ENGINEER: Bergmann Associates, Rochester, N.y. PRIME CONTRACTOR: Abcon Inc., youngstown, Ohio GEOTECHNICAL CONSULTANT: D'Appolonia, Monroeville, Penn. CAST-IN-PLACE CONCRETE SUPPLIERS: Carr Bros. Inc., Bedford, Ohio, and Newcomer Concrete Services, Norwalk, Ohio Concrete allows for the successful reconstruction of a national treasure blending functionality with historic preservation View of the re-watered Ohio & Erie Canal across Tinkers Creek. Manually operated sluice gates in the wall of the transition structure allow for regulation of canal water levels. Photo: Bergmann Associates. ReconstRuction of the Ohio & Erie Canal Aqueduct Over Tinkers Creek by Anthony Borrelli, Bergmann Associates 32 | ASPIRE , Winter 2013 P R O J E C T AspireBook_Win13.indb 32 12/28/12 11:39 AM

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