THE CONCRETE BRIDGE MAGAZINE

WINTER 2007

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/306894

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32 | ASPIRE , Winter 2007 profile hAll STrEET BridgE / hAYS, KANSAS E nginEEr Kansas DOT PrimE ConTrACTor King Construction Inc., hesston, Kan. (Demolition and new construction) ConCrETE SuPPliEr Apac Inc., hays, Kan. rE inForCEmEnT SuPPliEr Sheffield Steel, Kansas City, Kan. February 13, 2006, might not have been a Friday, but it was unlucky for the Hall Street Bridge just outside Hays, Kansas. That's when the arm of a backhoe being transported on a low-boy trailer eastbound along the interstate below inexplicably raised up and smashed through the concrete span, severely damaging it. The good news? The damaged portion of the bridge was replaced in less than six months with a cast-in-place box girder. The Hall Street Bridge is a four-span, cast-in-place, three-cell, reinforced concrete box girder bridge. The cross section is 4-1/2 ft deep with 6- to 10- in.-thick webs spaced at 8 ft on center. The top and bottom slabs are 8 and 6 in. thick, respectively. The total length of the bridge is 268.5 ft. The impact forced the bridge to be closed, as the backhoe's arm remained wedged tightly in the shattered concrete. Even more critical to transportation in the area, I-70 eastbound had to be closed while damage was assessed and a plan was devised for removing the backhoe and damaged portions of the bridge. That created a detour onto the U.S. 183 bypass that officials wanted to minimize. Almost immediately, a team of engineers was dispatched to the site in northwest Kansas to devise a plan to repair the bridge and get it back into service. The team, comprising Edward Burdiek, Clemens Boos, and Daniel Crosland of the Kansas Department of Transportation (KDOT) Bridge Management Section and Stephen Burnett of KDOT's Bridge Design Section, arrived the next day and began their assessment of the situation. "We found that the two most western webs of the bridge were completely destroyed for a length of 6 ft and that After a backhoe ripped through the Hays, Kansas, bridge, the damaged span was repaired with cast-in-place concrete to reopen the roadway in just six months ConCrete Bridge SurviveS Crash to rise AgAin by Wayne A. Endicott ASPIRE_win07.indb 32 12/29/06 2:12:24 PM

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