Construction — North America — USA — Bridges
Flexible on-site Installation : Prefabricated DYWIDAG Tendons for George V . Voinovich Bridge in Cleveland
The George V . Voinovich Bridge is part of the I-90 Interstate in Cleveland , Ohio , carrying vehicular traffic across the Cuyahoga River . The 5 lane structure replaces a truss bridge built in 1959 that had deteriorated badly and needed replacement .
The new crossing consists of two sister structures , the first of which was completed in 2013 . Until the completion of the second bridge , for traffic into the eastern direction , the first structure will continue to accommodate the total traffic volume of approximately 140,000 vehicles per day .
The current bridge under construction for eastbound traffic is where the DYWIDAG system is being used . The main bridge is approximately 1,194.8m ( 3,920ft ) long and consists of two units . The first part – the approach bridge – is a 4 span conventional steel plate girder bridge . The second part is a 10-span , 5 girder line , steel plate girder bridge supported by steel delta frames .
The span lengths vary from 82.3m to 110m ( 270ft to 361ft ). Both bridge decks have a total width of approximately 30.5m .
With a length of approximately 27.4m ( 90ft ), the 18 x 204 HP piles are the largest ever manufactured in the USA . The steel piles were hammered up to 61m ( 200ft ) deep into the underlying stable bedrock . The piers rest on two concrete blocks that measure 8.5 x 8.5 x 2.6m ( 28ft x 28ft x 8.5ft ). The columns of the piers were built in 3 sections , with the last section cantilevering laterally . The columns have a hollow core in order to reduce the overall weight of the bridge structures . On top of the two columns is a solid reinforced pier cap joining them together .
There are 5 pedestals on top of each pier cap . Five groups of 20-24 GR150 DYWIDAG Post- Tensioning Bars are embedded multiple feet in to each pier cap , pass through the pedestal , and protrude several feet above , so structural steel can be positioned onto the bars and they can still be stressed . After pier cap concrete placement , the top of the DYWIDAG Bar Tendons were required to pass through an area where a grout pad would be poured after the setting of knuckles ( at the bottom of the delta ), prior to the completion of the delta frame erection . While placing the grout pad , it was critical that the fluid grout pad material did not enter the ducts and cause blockage or prevent proper tensioning of the tendons .
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