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I-5 Boone Bridge Replacement Project

Planning Phase

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

​​​​The purpose of this project is to provide a seismically resilient bridge crossing the Willamette River on Interstate 5 to support current and future vehicle, pedestrian and bicycle traffic needs and safety. 

I5 Boone Bridge Replacement Project Open House


Meetings and Events

In-Person Open House – Nov. 16, 5:30-7:30 p.m.

Join us at the open house on Thursday, November 16, 5:30-7:30 p.m. at Wilsonville City Hall, 29799 Town Center Loop E in Wilsonville. There will be a brief presentation starting at 6 p.m. At the open house, you can learn about the preliminary planning phase of the project, review the project’s draft purpose, needs and goals, take our Bike and Pedestrian Use Survey, share your thoughts on our comment form and ask the project team questions.

Accommodations will be provided to people with disabilities and material can be provided in alternative formats. Please call Jyll Smith at 503-499-0335 or call the statewide relay 7-1-1 at least 48 hours in advance. City Hall is ADA-accessible and ADA-accessible parking is available.

Virtual Open House – Nov. 6 – Dec. 1 
Can't attend the in-person open house? Don't worry, you can visit our virtual open house to access the same information online that will be shared at the in-person event. In the virtual open house, you can learn about the planning phase of the project, review the draft purpose, needs and goals, take our Bike and Pedestrian Use Survey and share your thoughts on our comment form. 

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The I-5 Boone Bridge crosses the Willamette River in Wilsonville. It is an important link on I-5, which is the main north-south highway on the West Coast for international, national, state, and regional travel and freight movement. The bridge is at risk of failing in a Cascadia Subduction Zone Earthquake and is part of the state's designated Seismic Lifeline Route.

Currently, there are more than 126,000 vehicles including an average of 17,000 trucks crossing the bridge every day. Expected population and economic growth in the region will increase the delays drivers experience in the project area due to congestion, which affects interstate and local road movements. The area has also been identified by ODOT as a high crash rate location.

ODOT is exploring solutions to these issues as part of the I-5 Boone Bridge Replacement Project. The project will replace the existing bridge with a new one that can withstand a major earthquake, enhance traffic flow and travel time reliability and improve safety connections. Additionally, the project will provide new walking and biking options over the Willamette River.

The Planning and Environmental Linkage process is a collaborative approach to transportation decision-making that gathers community and agency input early in project development to fully establish the needs and goals of the project, and identify possible solutions, before conducting analysis under the National Environmental Policy Act process. 


  • Replace Boone Bridge with a new bridge capable of withstanding a Cascadia earthquake event.

  • Add a southbound ramp-to-ramp (auxiliary) lane between the Wilsonville Road entrance and OR 551 exit.

  • Make adjustments to Miley Road (Charbonneau) interchange ramps for safer merging.

  • Add wider shoulders for safety.

  • Provide new walking and biking options over the Willamette River. ​

Technical Report and Supporting Documents

In the previous phase of this project, we studied how making changes to I-5 near the Boone Bridge could affect how people travel and how land is used. We put together a short version of what we found in the study along with our answers to questions about travel, land use, access and traffic. You can find this information in the project documents below.

Important discoveries from the study are shared in an executive summary report submitted to the Oregon Legislature in January 2021. If you are interested in all the details about how we did the study and what we found, you can read the I-5 Boone Bridge and Seismic Improvement Project technical report.

Project Ar​ea Map


I-5 |

​I​-5 at the Boone Bridge in Wilsonville

Cost and Funding

The Planning and Environmental Linkage phase of the project is funded with $4 million. Funding for environmental review, design and construction is not available at this time so work will stop after the completion of preliminary planning. Preliminary planning will be complete by early 2025.

Additional Information

Información en español.

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.​

Si desea obtener información sobre este proyecto traducida al español, sírvase llamar al 503-731-4128. 

Если вы хотите, чтобы информация об этом проекте была переведена на русский язык, пожалуйста, звоните по телефону 503-731-4128. 

Nếu quý vị muốn thông tin về dự án này được dịch sang tiếng Việt, xin gọi 503-731-4128.​ 

이 프로젝트에 관한 한국어로 된 자료 신청방법 전화: 503-731-4128. 

如果您想瞭解這個項目翻譯成繁體中文的相關資訊,請致電 503-731-4128. 


Contacts & Media

Project Contact

Public Outreach and Media Manager
Rose Gerber

Last Updated

11/8/2023 12:58 PM

Project Number


Project Documents

Related documents to this project
BooneBridge_ExecutiveSummaryReport_small.pdfExecutive summary report to the Oregon State Legislature, January 2021.
Boone_Bridge_Study_Technical_Report.pdfTechnical report from Quincy Engineering, Inc. on the I-5 Boone Bridge and Seismic Improvement Project, December 2020.
Appendix A Vicinity Map.pdfAppendix A: Vicinity map of the Boone Bridge area of I-5.
Appendix B Photos.pdfAppendix B: Photos of the technical report.
Appendix C Bridge Inspection Report.pdfAppendix C: I-5 Boone Bridge inspection report.
Appendix D Final Preliminary Geotechnical Engineering Letter Report.pdfAppendix D: Final preliminary geotechnical engineering letter report for the I-5 Boone Bridge and Seismic Improvement project.
Appendix E Bridge Retrofit and Widening Concept Plans.pdfAppendix E: Concept plans for a Boone Bridge widening and seismic retrofit process.
Appendix F Bridge Replacement Concept Plans.pdfAppendix F: Concept plans for a Boone Bridge replacement.
Appendix G Road Concept Plans.pdfAppendix G: Road concept plans.
Appendix H Traffic Staging Concept.pdfAppendix H: Traffic staging concept for a Boone Bridge replacement.
Appendix I Work-Bridges_both options.pdfAppendix I: Drawings of both options for work bridges that could be used during a Boone Bridge replacement.
Appendix J Project Prospectus.pdfAppendix J: ODOT Environmental Project Prospectus for both the retrofit and widening option and the replacement option for the Boone Bridge.
Appendix K NSBA Conceptual Solution Report.pdfAppendix K: National Steel Bridge Association (NSBA) conceptual solution report for the Boone Bridge, July 2020.
Summary Response to Metro Requests_01072020.pdfODOT summary response to Metro requests for further analysis on travel demand and land use impacts, managed lanes, active traffic management and access management, December 2020.
K21541_project_area_map_Oct_2023.pdfMap of Project Area October 2023
PU_K21541_Misc_15_02.pdfI-5 Boone Bridge Replacement Project English Handout
PU_K21541_Misc_15_03.pdfI-5 Boone Bridge Replacement Project Spanish Handout
BooneBridge_Dec2023_Newsletter.pdfBoone Bridge December 2023 Newsletter