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Beech Trunk Sewer Project

Sewer and Stormwater
Active
Environmental Services has finished construction on a project to repair large-diameter trunk sewer pipes near Interstate-5 and N Interstate Ave. This project will reduce the risks of basement sewer backups, flooding, and emergency repairs in the future.
Construction began the week of August 12 and finished in early November.
On this Page

Project Area  

The project is located to the south end of Mississippi Avenue and the N Greeley Avenue exit ramp that runs under I-5. 

Beech Trunk Sewer Project Simplified Map

Schedule 

Construction activity will take place beginning Early-August 2024 through early November 2024. Construction hours are 7am – 6pm, Monday through Friday with the possibility of work on Saturdays. There are four proposed nights where crews will need to work beyond the regular construction hours.

Construction Schedule

Week of November 4

  • Crews we will install a stormwater inlet. 

Week of November 11

  • Construction is complete. 

What to Expect During Construction

Construction creates noise, vibration, and dust and disrupts normal neighborhood activity.

You may experience traffic delays near the active work zone and noise from generators and sewer cleaning equipment. Please follow all construction and traffic signage to help keep our works zones safe. Crews will access maintenance holes in the street and in the grassy field next to I-5 and N Mississippi to establish construction access. 

For detailed look at what to expect from construction, visit the Construction Impacts webpage.

Construction Methods

To perform this work crews will us a trenchless construction method that require little to no digging to repair the Beech Trunk sewer pipe. Crews will be using a method called Cured-in-Place-Pipe Lining (CIPP).

CIPP involves inserting a flexible liner inside the existing pipe, inflating the liner, and exposing it to steam to harden the liner inside the pipe. The liner forms a smooth surface inside the existing pipe, restores it to near-new condition.

CIPP Odor: CIPP repair projects can sometimes emit an odor during the pipe-lining work. The odor is from the chemical styrene in the resin liner installed inside the pipe. The odor dissipates quickly once the installation process is complete. The amount of airborne styrene is not expected to cause health issues for workers or the public. Visit the CIPP Webpage to learn more about this construction method.

Traffic/Parking

Traffic delays, temporary lane closures, on-street parking removal, pedestrian detours, nighttime street closures, and flaggers will be present as needed in the work zones. MAX light rail service will not be affected.

Bike Traffic

Bike traffic will not be impacted by construction. Use caution when traveling through the construction site and follow all traffic control signage.

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.  

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