Project Info

SR 16 - Eastbound Nalley Valley - Completed August 2014

The eastbound Nalley Valley construction contract built a new eastbound connection between SR 16 and Interstate 5. The new eastbound viaduct and associated ramps opened to traffic in August 2014.

This project was the second of three projects that rebuilt the Nalley Valley Viaduct. The first project, Westbound Nalley Valley, opened to traffic in June 2011.  The third project, the I-5/SR 16 HOV Connectors, will provide HOV connections between I-5 and SR 16. This project will use the design-build method of project delivery. The timeframe for design and construction is between 2016 and 2019.

Learn more about the Tacoma/Pierce County HOV Program.


How you benefit

Improves safety
The new eastbound Nalley Valley project widened shoulders, improved ramp alignments and curves and improved lighting.

Relieves congestion
The new eastbound facility created additional capacity to improve traffic flow. It also reduced conflicting traffic movements or weaving areas.

New traffic data collectors and traffic cameras were installed. WSDOT uses the data to provide traffic information to the public. The project improved electronic signage for traveler notification and added highway advisory radio capacity.

Protects environment
Stormwater drainage was expanded and improved in this project. 

Economic incentive
Added capacity and smoother traffic flow contributes to a more efficient business environment.


Funded with:
2003 Gas Tax (Nickel Funding): $48,383
2005 Gas Tax (TPA): $53,136
Pre-Existing Funds (PEF): $7,992
Total: $109,511

Contact us
Cara Mitchell
WSDOT Olympic Region

Project Area Map
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New Sprague onramps to eastbound SR 16 and I-5 are now open.
New Sprague on-ramps to eastbound SR 16 and I-5 opened to traffic in August 2014.