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Historic Columbia River Highway Congestion & Transportation Safety Improvement Plan

Project Completed

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

​This plan recommends projects and programs to improve safety, reduce vehicular congestion and enhance visitor experience in the Historic Highway corridor for all transportation modes. 

The project planning area includes the Historic Highway along the “waterfall corridor” from Women’s Forum to Ainsworth State Park.



For over 100 years, thousands of drivers, cyclists and hikers have used the Historic Columbia River Highway to access the Gorge’s most beautiful and popular destinations. In the past 10 years, Historic Highway traffic grew nearly 50 percent, increasing safety concerns and impacting the experience of visitors and residents.​​

The project aimed to:
  • Reduce conflicts between Historic Highway users (cars, bikes, pedestrians) and reducing excessive delay/congestion within the corridor.
  • Reduce congestion, illegally parked cars and delayed emergency response/rescue due to congestion.
  • Identify sustainable funding sources for implementation.
  • Enhance safe and convenient opportunities for people walking, biking and taking public transportation to reduce congestion, increase public safety and enhance visitor experience.
  • Provide improved access for recreational and scenic enjoyment of natural and cultural resources adjacent to the corridor.
  • Reduce impacts from congestion and illegal parking on the scenic, natural, cultural and recreational resources.
  • Consider and address safety, parking and congestion impacts on Multnomah County-owned facilities.
​​​​​​View the final Congestion and Transportation Safety Improvement Plan. ​This project is complete, but we’re still working on implementing the short, medium, and long-term recommendations in the Plan.


U.S. 30 | ​Histor​​ic Columbia River Highway from Portland Women's Forum to Ainsworth State Park.

Cost and Funding

​​Project cost: $411,000 for planning. The Final plan includes planning-level implementation costs for each recommended strategy.

Additional Information

​This project was a partnership between ODOT, the U.S. Forest Service, Oregon State Parks and Recreation Department, Multnomah County and the Federal Highway Administration. 

The project builds off several successful efforts to manage congestion and improve safety in the Waterfall Corridor, continuing the essential collaboration between these agencies to identify and achieve solutions for the Gorge. Some of these efforts include:
In addition to the project partner agencies, numerous stakeholders were involved in plan development, including Federally recognized Tribes, residents, visitors, the Columbia River Gorge Commission, elected officials, emergency responders, cyclists, local businesses, hikers and other recreationalists and advocacy organizations. 

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.

¿Hablas español? Podemos proporcionar la información de esta publicación en español, por favor llame al 503-731-4128.

Contacts & Media

Cars stuck in congestion line the Historic Highway.

Project Contact

Columbia River Gorge National Scenic Area Coordinator
Terra Lingley

Last Updated

4/8/2024 9:58 AM

Project Number


Project Documents

Related documents to this project
Congestion and Safety Plan HHCP June 2019.pdfView the full Historic Columbia River Highway Congestion and Transportation Safety Improvement Plan from June 2019.
Technical Memo 1 Existing Conditions Full Report HHCP.pdfView Technical Memo 1: Existing Conditions Full Report for the Historic Columbia River Highway (including executive summary).