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/297000
The Dodridge Street Bridge over the Olentangy River serves as a gateway into Olde North Columbus, one of the oldest neighborhoods in Columbus, Ohio. The project replaced a deteriorating bridge, corrected an existing deficient roadway alignment, and carries over 14,000 vehicles per day as well as pedestrians. In addition, several thousand pedestrians and bicycle users travel daily along the Olentangy River Greenway (ORG), which is located underneath the bridge. The 13-mile-long ORG connects the north suburbs to downtown Columbus and travels through several parks and The Ohio State University campus area. During design of the Dodridge Street Bridge, the Franklin County Engineer's Office (FCEO) identified the need to solicit design input from the surrounding community. These opinions, coupled with river hydraulics, ongoing river r e s t o r a t i o n , u p s t r e a m p r o t e c t e d wetlands, and the extensive use of the ORG, supported the desire to provide a long-span, aesthetically pleasing structure. Background T h e o r i g i n a l 2 0 6 - f t - l o n g b r i d g e , constructed in 1901, was a two- span, steel through girder bridge with a timber floor system. The bridge was rehabilitated in 1952. In 1967, the entire superstructure was replaced with precast, prestressed concrete adjacent box beams. In 2010, the bridge was determined to be in poor condition. Project Development Five design alternatives were considered for the Dodridge Street Bridge. The alter native that was favored best satisfied the following project criteria: • No piers within the river banks • West abutment location out of ordinary high water • Open inviting appearance • Significant headroom and trail width for ORG • Minimal disruption to existing dwellings • Reasonable cost • Long structure life • Minimal maintenance associated with a concrete structure The selected alternative of a three- span bridge minimized work within the river, where the water elevation can fluctuate greatly due to an upstream reservoir controlled by the Army Corps profile DoDriDge Street BriDge / Franklin County, ohio BRIDGE DESIGN ENGINEER: E.l. robinson Engineering, Columbus, ohio, and Janssen & Spaans Engineering inc., indianapolis, ind. AESTHETIC ADVISOR: Frederick Gottemoeller, Columbia, Md. PRI mE CONTRACTOR: J. D. Williamson Construction Co. inc., tallmadge, ohio PRECASTER: Prestress Services llC, Grove City, ohio, a PCi-certified producer POST-TENSIONING CONTRACTOR: VSl international ltd., hanover, Md. READY- mIX CONCRETE SUPPLIERS: anderson Concrete, Columbus, ohio, and Central ready Mix, Columbus, ohio [the alternative] required the least construction time, largely due to the use of precast concrete beam construction. F r a n k l i n C o u n t y , O h i o Bridge profile (east end). The Dodridge Street Bridge has a main span of 200 ft and two hidden end spans of 20 ft 6 in. All photos: E.L. Robinson Engineering. Dodridge Street Bridge by Jim Pajk, Franklin County, Ohio, and Rick Engel and Dave Traini, E.L. Robinson Engineering Three-span, post-tensioned concrete girder end-anchored superstructure bridge 26 | aSPirE , Spring 2013 P R O J E C T Dodridge_Spr13.indd 26 4/1/13 11:35 AM