Precast Solutions - November/December 2008 - (Page 15) Highway construction in congested urban areas is a case in point. Often the existing infrastructure eliminates construction options that require significant space at the job site for maneuvering equipment and installing structural foundations. In a long-awaited highway project in Spokane, Wash., a precast concrete arch system solved the complex site concerns as well as meeting requirements of the controlling entities. P recast concrete solutions often prove their As part of a Washington State Department of Transportation (WSDOT) highway project in Spokane, the largest precast BEBO Arch System in the United States was recently installed as part of a major U.S. 395 construction project. The precast concrete tunnel structure, with a 54-foot span (width) and a 25.5-foot elevation, encloses a set of railroad tracks belonging to Burlington Northern Santa Fe (BNSF) Railway Co. – with provision for a future second track – while supporting construction of the U.S. 395 Corridor Project overhead. A total of 444 precast concrete units, each 6 feet wide, NOVEMBER/DECEMBER 2008 advantages and design flexibility in the most difficult and restricted construction sites. At left, the BEBO Arch tunnel takes shape near Spokane, Wash. Above, arches stored at the manufacturer’s facility await transportation to the job site. | PRECAST SOLUTIONS 15
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