SR 150 - No See-Um Road Intersection Improvements


November, 2017

  • Construction began April 17 and will be complete by Thanksgiving.
  • A ribbon cutting ceremony is scheduled for Wednesday, Nov. 29
  • Check the "Construction Phases" link in the left column for the project's timeline and traffic plan.
  • Check this Roundabout page for how they work.

The legislature's 2015 "Connecting Washington" revenue package included $6.5 Million in final design, right of way and construction funding to build a roundabout at the SR 150/NoSeeUm Rd. intersection on the north shore of Lake Chelan.

This I-2 Highway Capital Improvement Program Collision Prevention Safety Project would construct improvements to the intersection of SR 150 and No See-Um Road between Manson and Chelan.

Why is WSDOT improving this intersection?
Even with hundreds of yet-to-be-developed residential lots that will be accessed through this intersection, the current average traffic count has already risen to 10,000 vehicles per day. These volumes are producing more and longer delays for side-road traffic - the result of the lack of gaps to turn onto the highway. Faced with these conditions, drivers are sometimes making decisions that result in a collision or a near miss. 

The proposed roundabout is to reduce collisions, delays and improve bicycle and pedestrian mobility and access to Lake Chelan. 


The End Result
A new intersection to accommodate higher traffic volumes while reducing the potential for serious collisions.

Project Benefits

  • Reduced potential for serious collisions and improved traffic flow
  • Better motorist information from new signs and striping
  • Extended roadway life with new pavement
  • Reduced maintenance costs 


What is the project timeline?
The 2015 Connecting Washington budget includes $6.5 Million for design, acquisition of right of way and construction of the roundabout.
The project is expected to require 400 work days to complete.  Work began in April of 2017 with final completion in 2018. 


Financial Data for PIN 215000K
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $1,166
CWA $6,500
Total $7,666

A $5,283,745.45 construction contract was awarded to Strider Construction Co. on March 16, 2017.


How can I get more information?

David Kieninger
Project Engineer
WSDOT North Central Region
1551 N. Wenatchee Ave.
Wenatchee, WA 98807
Phone: (509) 667-2860 or toll free (888) 461-8816