Portland Bureau of Environmental Services
Emergency Messages as of 10:28 pm, Thu. Mar. 28
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News Releases
Update: Crews contain sewage release under N Columbia Boulevard; road closure continues, advisory continues for Columbia Slough - 03/22/24

City crews working overnight and today have contained - but not stopped - a large-scale sewage release that is occurring under the N Columbia Boulevard Bridge in industrial North Portland. 

Crews working overnight and today are using barriers to contain the sewage that has surfaced from a broken pressurized pipe at the base of the bridge. They are pumping that effluent back into the city’s system to prevent further impacts to the environment. 

The incident is complex, and will require at least two weeks for repairs. Crews are maintaining service to customers in the area while assessing the extent of damage to the pressurized pipe and nearby pump station, as well as to the base of the bridge itself. 

Environmental Services continues to advise the public to avoid contact with the waters of the Columbia Slough until this incident is resolved. Warning signs have been placed at several points along the slough around the affected area. 

N Columbia Boulevard will remain closed through at least next week between N Rivergate and N Burgard roads to allow for further assessment and repairs. A detour is in place.

Engineers with the Portland Bureau of Transportation are working with Environmental Services to assess whether the ramp to the Columbia Boulevard overpass is damaged. The flow of high pressure sewage inside the ramp structure may have damaged the ramp or soils supporting it. 

Crews working to contain a sewage release at the base of the Columbia Boulevard overpass near the Columbia Slough. Red tape contains the site at the bridge base with heavy equipment in the background.

With this risk, PBOT emphasizes the importance of obeying all road closure signage and detours. Traffic, including heavy freight trucks, could exacerbate any damage and extend the time needed for any repairs.  Crews will reinforce the road closure with additional barriers, and may adjust the detour route to accommodate weekday traffic.

The original news release was issued yesterday. 

About Environmental Services
Environmental Services - the City of Portland’s sewer and stormwater utility - protects public health and the environment by collecting and recovering resources from the city’s wastewater, managing stormwater, and restoring and protecting Portland’s rivers, streams, and watersheds. 

Update: Crews contain sewage release under N Columbia Boulevard; road closure continues, advisory continues for Columbia Slough - 03/22/24

City crews working overnight and today have contained - but not stopped - a large-scale sewage release that is occurring under the N Columbia Boulevard Bridge in industrial North Portland. 

Crews working overnight and today are using barriers to contain the sewage that has surfaced from a broken pressurized pipe at the base of the bridge. They are pumping that effluent back into the city’s system to prevent further impacts to the environment. 

The incident is complex, and will require at least two weeks for repairs. Crews are maintaining service to customers in the area while assessing the extent of damage to the pressurized pipe and nearby pump station, as well as to the base of the bridge itself. 

Environmental Services continues to advise the public to avoid contact with the waters of the Columbia Slough until this incident is resolved. Warning signs have been placed at several points along the slough around the affected area. 

N Columbia Boulevard will remain closed through at least next week between N Rivergate and N Burgard roads to allow for further assessment and repairs. A detour is in place.

Engineers with the Portland Bureau of Transportation are working with Environmental Services to assess whether the ramp to the Columbia Boulevard overpass is damaged. The flow of high pressure sewage inside the ramp structure may have damaged the ramp or soils supporting it. 

Crews working to contain a sewage release at the base of the Columbia Boulevard overpass near the Columbia Slough. Red tape contains the site at the bridge base with heavy equipment in the background.

With this risk, PBOT emphasizes the importance of obeying all road closure signage and detours. Traffic, including heavy freight trucks, could exacerbate any damage and extend the time needed for any repairs.  Crews will reinforce the road closure with additional barriers, and may adjust the detour route to accommodate weekday traffic.

The original news release was issued yesterday. 

About Environmental Services
Environmental Services - the City of Portland’s sewer and stormwater utility - protects public health and the environment by collecting and recovering resources from the city’s wastewater, managing stormwater, and restoring and protecting Portland’s rivers, streams, and watersheds. 

Location of the sewage release underneath Columbia Blvd
Location of the sewage release underneath Columbia Blvd
Advisory: Sewage release under N Columbia Boulevard north of Lombard Street leads to road closure, overflow to Columbia Slough (Photo) - 03/21/24

Environmental Services is responding to a large-scale sewage release occurring underneath the N Columbia Boulevard overpass just north of Lombard Street in a heavily industrial section of North Portland. 

City crews are in the process of closing a portion of N. Columbia Boulevard around the overpass overnight and through at least Friday morning to allow further investigations and assessment of the incident. 

Crews are establishing a detour. The closure involves N Columbia Blvd from N Rivergate to N Burgard roads. The traveling public is advised to follow detour signs or avoid the area and use alternate routes. 

In addition, an unknown volume of sewage has reached the Columbia Slough and the flow continues. The public is advised to avoid contact with the slough’s water to avoid exposure to elevated levels of bacteria. This incident is ongoing.  

The suspected cause of the sewage release is a break in a pressurized pipe from a nearby pump station that carries sewage to the city’s main wastewater treatment plant. Crews are continuing their assessment and efforts to contain the flow. More information will be provided as this incident continues.

About Environmental Services
Environmental Services - the City of Portland’s sewer and stormwater utility - protects public health and the environment by collecting and recovering resources from the city’s wastewater, managing stormwater, and restoring and protecting Portland’s rivers, streams, and watersheds.