The Washington State Department of Transportation (WSDOT) will open the new Westbound Nalley Valley Viaduct on Sat., June 25, allowing traffic to flow from northbound and southbound I-5 to westbound SR 16 and Sprague Avenue. According to WSDOT, approximately 131,000 motorists drive this section of highway each day. Crews built 10 new bridges — including a segmental overpass connecting northbound I-5 to westbound SR 16 — since Guy F. Atkinson Construction started the $120 million, nickel-funded project in January 2009. The bridges, constructed from new approaches on 77 piers, span more than seven acres. The work supports construction of the Eastbound Nalley Valley Project, which begins this fall, and in 2013 will move eastbound SR 16 traffic onto a new viaduct and open a new ramp between S. Sprague Avenue and eastbound SR 16. For more information about the I-5/SR 16 Westbound Nalley Valley Project, visit http://www.wsdot.wa.gov/Projects/PierceCountyHOV/SR16_WBNalleyValley . For more information about the SR 16 Eastbound Nalley Valley Project, visit http://www.wsdot.wa.gov/Projects/PierceCountyHOV/SR16_EBNalleyValley .
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