Major Streets Transportation Improvement Program (MSTIP)

MSTIP Color 2

Local taxes + local input = countywide improvements

What is MSTIP?
MSTIP is local property taxes at work building major transportation improvements countywide. By 2018, MSTIP will have funded 130 multi-modal projects totaling $730 million—improving mobility for cars, public transit, freight, cyclists and pedestrians. Our residents and businesses rely on these roads every day. The MSTIP program began as a series of serial levies (1986, 1989 and 1995) and voters rolled it into the county's fixed tax rate in the late 1990s.

This innovative pay-as-you-go program has been praised across the state as a smart and balanced response to growth. It is a key piece of the county's transportation funding strategy.


How does MSTIP work?
The Board of County Commissioners determines MSTIP funding amounts. While the county manages MSTIP projects, most of the money goes back into the local community—to private sector planning and engineering firms, and to construction contractors on a competitive bid basis to build projects under county supervision. MSTIP funds can also be used to leverage other local, state and federal funds to provide even more benefit across the county.

Does MSTIP benefit all modes of transportation?
Yes. MSTIP has improved access and mobility for all users by improving many commuter, transit and freight routes and by constructing more than 130 miles of bikeways and sidewalks along major roads.


What projects are planned/in progress?
MSTIP funding decisions are typically made on a 5 to 6-year cycle. In July 2012, the Board of County Commissioners adopted the five-year $175 million MSTIP 3d Funding Program, which includes: $160 million for 19 multi-modal road projects;$10 million for replacement of deficient rural bridges;$5 million to be used to leverage other local, state or federal transportation funds (which may be used for bicycle and pedestrian projects);and $500,000 for upgrades to the county's advanced traffic management system. Most MSTIP 3d projects will be substantially complete by 2020.

Visit our Transportation Projects page for a list of major county transportation projects currently in the planning, design and construction stages. Select any project to obtain more information on its funding.


What MSTIP projects have been completed?
Major projects completed to date include sections of:

  • 170th Avenue
  • Evergreen Parkway/Road
  • 185th Avenue
  • Murray Boulevard
  • Baseline Road
  • Oleson Road
  • Brookwood Avenue/Parkway
  • Roy Rogers Road
  • Cornelius Pass Road
  • Scholls Ferry Road
  • Cornelius-Schefflin Road
  • Tualatin-Sherwood Road  
  • Cornell Road
  • Verboort roundabouts  

 Cornell Before and After

Cornell Road Before and After

How are MSTIP projects selected?
Project selection is a joint effort of the county and our cities. Elected officials from these jurisdictions meet regularly as the Washington County Coordinating Committee (WCCC) to address local and regional transportation issues. The WCCC makes MSTIP project recommendations to the Board of County Commissioners, which ultimately authorizes the projects. Generally projects have to meet certain criteria to be eligible for MSTIP funding:

  • Improve safety

  • Remove bottlenecks

  • Major roads used by many residents

  • Address multiple transportation demands (cars, trucks, bikes, pedestrians, transit)

  • Rank as high local government priorities

  • Geographically balanced, providing benefit to residents all around the county

  • Projects reviewed through the Washington County Coordinating Committee (WCCC); approved by Board of County Commissioners

What's next for MSTIP?
Later in 2015, we will begin preliminary discussions with our cities on the MSTIP 3e funding program for 2019 through 2023. We will be asking the public to weigh in on that process.


Want to keep up with the latest MSTIP news?
We will be working to keep the public updated as MSTIP 3d projects progress through the project development and construction phases. We will also involve the public as we develop the MSTIP 3e funding program. Visit the County's eSubscriptions page and sign up to receive e-mail updates when additional information is posted to our MSTIP web pages. 

You can also sign up to receive periodic e-mail updates on specific road projects. Visit the "Transportation Projects" section of our eSubscriptions page periodically and sign up for any current projects you are interested in. 

You can also find out about current and upcoming County roadwork by visiting us at


What do you think?
Feel free to leave us a comment. We value your input!