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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. 


Meetings and Events

Thank you for everyone who provided comments at our recent open houses. Watch for future meetings and events here.

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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

Project Schedule


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

Read the I-5 Wilsonville Facility Plan​.

Information compiled and evaluations completed as part of the current project PEL process may be adopted or incorporated by reference into a future environmental review process to meet the requirements of the National Environmental Policy Act​.​

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

2/16/2024 4:37 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.
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
PU_K21541_NewsLtr_Y2024M02D07.pdfBoone Bridge February 2024 Newsletter
PU_K21541_NewsLtr_Y2024M03D06.pdfBoone Bridge March 2024 Newsletter
Boone Bridge Purpose_Need_Goals_020624_remediated.pdfBoone Bridge Purpose, Needs and Goals