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U.S. 26 Widening Project: Cornelius Pass Road to 185th Avenue

Project Completed

Region 1: Portland metro and Hood River County (Hillsboro, Washington)

Construction began in November 2016 on a project to address congestion on U.S. 26 (Sunset Highway) between Cornelius Pass Road and 185th Avenue.​  Work was completed in June 2019.​​​


Construction Impacts

Work on this project is complete.

Meetings and Events

** Visit the November 2016 online open house to learn about the construction impacts during this 2-year project. 

** Visit the February 2016 online open house to learn more details about this project and meet the project staff.



This joint project between ODOT, the City of Hillsboro and Washington County wrapped up in June 2019. Read the latest fact sheet (updated Nov. 2016).

The purpose of this project was to increase capacity, improve traffic safety and relieve congestion in this stretch of U.S. 26, which currently has two lanes in each direction. There are now three lanes in each direction of U.S. 26, from Cornelius Pass Road into downtown Portland.

The project elements included:


U.S. 26 | ​Cornelius Pass Road to 185th Avenue

Cost and Funding

​$​34.5 million

What Problem Will This Improve?

The stretch of U.S. 26 between Cornelius Pass Road and 185th Avenue has reached its vehicle capacity. The congestion is particularly evident on U.S. 26 westbound between 185th Avenue and Cornelius Pass Road. The population and employment in Washington County continues to grow, increasing the traffic demand on U.S. 26. Without improvements, congestion and related crashes are anticipated to increase in the area.

Additional Information

For ADA (Americans with Disabilities Act) or Civil Rights Title VI accommodations, translation/interpretation services, or more information call 503-731-4128, TTY 800-735-2900 or Oregon Relay Service 7-1-1. 

¿Habla ustéd español? Podemos proveer la información en esta publicación en español. Para recibir la información en español, por favor llamé al 503-731-4128.

Contacts & Media


Project Contact

Community Affairs Coordinator
Lili Boicourt

Last Updated

12/18/2019 8:53 AM

Project Number


Project Documents

Related documents to this project
Fact-Sheet-18806.pdfThis fact sheet details the project purpose, elements and traffic impacts, along with a map of the project area.

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