Tryon Creek Fish Passage Improvement Project

Sewer and Stormwater
Environmental Services has completed a stream and habitat improvement project underneath the new Boones Ferry Bridge. This project will help support healthy habitat for fish and wildlife by allowing fish to reach upstream areas of the Tryon Creek State Natural Area.
Construction began in July of 2023 and is now complete.
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In the spring of 2022, Environmental Services completed the Boones Ferry Bridge Project.  This project removed an undersized culvert in Tryon Creek and replaced it with a new bridge. The new bridge created and restored connections for fish, wildlife, and people. Now that Tryon Creek is flowing freely, crews need to return to ensure that the creek is passable for fish species moving upstream to the new habitat areas opened up by the bridge project.  For more information on the construction of the bridge, please visit the Boones Ferry Bridge Project website.

Project Area

The project is located in Tryon Creek where it passes underneath the new Boones Ferry Bridge.

Map of the Tryon Creek Fish Passage Improvement Project location - where Tryon Creek flows under the Boones Ferry Bridge in SW Portland.

What's Happening Now?

Work in Tryon Creek and Arnold Creek is now complete. Crews are finishing final restoration work, seeding the creek banks, and completing final project punchlist items. All work is weather dependent, and the schedule below is subject to change. 

Traffic Impacts - SW Arnold Street is now open 

We are happy to announce that SW Arnold Street is now open to vehicle traffic. Thank you for your patience during this important project.  

Trail Connection

As part of the earlier Boones Ferry Bridge project, Environmental Services realigned an old trail that connected from roughly Arnold street to the larger nearby trail network. This old trail was informal and crossed sensitive habitat areas. It was causing damage to the streambank and erosion to the hillside.

The newly aligned path is now up to standards and part of the official trail network.  It is complete except for a footbridge across Arnold Creek. Oregon Parks and Recreation Department (OPRD) will be responsible for building the footbridge to complete this last link. Our partners at OPRD are in the process of now of getting permits for this footbridge and pursuing funding for future construction.

We Want to Hear from You

We would like to hear from you about special events, school activities, and community services in your neighborhood you think may be impacted by this project. Also, we want to know if you have any concerns related to business operations, disability or mobility issues, medical or business deliveries, and proposed night work. Your input will help us minimize the impact to your neighborhood during construction.  

Sign Up for Project Updates

Sign up for periodic email or text message updates for the Tryon Creek Fish Passage Improvement Project through our free GovDelivery subscription service. These updates are the best way to stay informed about what’s happening and what to expect. You can also sign up for bulletins on other projects and topics.