Client
Washington State Department of Transportation
Completion Date
2011
Designer
McNary Bergeron & Associates
Location
Tacoma, Washington
Delivery Method
General Contractor
Division
Northwest
Contract Value
$114 million
The SR 16 Westbound Nalley Valley Interchange project improves the westbound connection between I-5 and SR 16. The project team constructed new westbound bridges over Nalley Valley and eliminated traffic weaves through a new direct connection from southbound I-5 to Sprague Avenue and westbound SR 16. Improvements also included building a new Sprague Avenue on-ramp to westbound SR 16, a new eastbound SR 16 off-ramp to Sprague Avenue, and a new flyover ramp from northbound I-5 to westbound SR 16 and Sprague Avenue.
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel.jpg?h=418bbcf4&itok=QxoSReR6)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel1.jpg?h=418bbcf4&itok=uUku8JLV)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel2.jpg?h=418bbcf4&itok=UCRBdck0)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel3.jpg?h=418bbcf4&itok=LMAjcKZs)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel6.jpg?h=418bbcf4&itok=JtUAmGpZ)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel7.jpg?h=418bbcf4&itok=yE_rFxrQ)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel10.jpg?h=418bbcf4&itok=DofZh3pR)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel11.jpg?h=418bbcf4&itok=RGWJ_xwv)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel8.jpg?h=418bbcf4&itok=GM88N506)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel9.jpg?h=418bbcf4&itok=Pkpah_ik)
![SR 16 Westbound Nalley Valley Interchange](/sites/default/files/styles/gallery_image/public/SR%2016%20Westbound%20Nalley%20Valley%20Viaduct_Carousel5.jpg?h=418bbcf4&itok=qWpFoyR3)