Environmental Services is designing three large-scale sewer projects in North and Northeast Portland neighborhoods to replace or repair approximately 53,300 feet of public sewer pipes that are on average 90 years old and failing due to age. This is the equivalent of 10 miles of sewer pipes. The three adjacent project areas will include construction in Piedmont, Humboldt, Woodlawn and King neighborhoods plus a few blocks in Overlook.
In the Woodlawn and King neighborhoods, the work will include repairing about 29,000 feet of sewer pipes. The sewer repairs will enhance livability by improving sewer and stormwater infrastructure, increasing sewer capacity, and reducing the risks of street flooding and sewage releases to homes, businesses and streets. Construction in Woodlawn-King will begin in 2016.
Proposed Pipe Replacement and Repair Locations
The map below shows the proposed pipe replacement and repair locations. It is too early in the design process to know what construction methods will be used where.
For approximately two to three months beginning on August 4, work crews will be drilling holes in street pavement and taking soil samples at several locations to help the design engineers understand conditions that construction crews may encounter. What the engineers learn from analysis of soil, rock and pavement samples will help them determine construction methods.
What to Expect During Soil Sampling
Soil sampling will occur Monday through Wednesday between 7:00 a.m. and 6:00 p.m. Crews will work at eight to ten locations a day beginning at the north end of the project area (everything north of Rosa Parks Way) and moving south (see map below). The holes will be a few inches in diameter and will be filled immediately after the drilling is completed. This work may require temporary lane restrictions and on-street parking closures. There may be brief periods of noise, dust and mild vibration during drilling. Work at each location will last approximately one hour.
Locating and Marking Underground Utilities
All sewer design and construction projects depend on advance surveys of construction areas. A few weeks before soil sampling starts, crews will also be in the neighborhood to locate and mark underground utilities by painting stripes on streets and sidewalks or placing colored flags in landscaped areas. Each color indicates what is buried below. The color code is as follows:
- White = proposed excavation
- Pink = temporary survey markings
- Red = electric power lines, cables, conduit and lighting cables
- Yellow = gas, oil, steam, petroleum or gaseous materials
- Blue = potable water
- Purple = reclaimed water, irrigation and slurry lines
- Green = sewer and drain lines
Other Work in the Area
For approximately the next two to three months, work crews will be conducting soil sampling and survey work at several locations in adjacent neighborhoods as well, including Humboldt, Piedmont, and a few blocks in Overlook.
Trucks will also be in Woodlawn-King and adjacent neighborhoods using video equipment to inspect the interior of public sewer pipes. This will involve lowering equipment into a manhole and directing a robotic camera through the sewer pipe. Engineers will use this information to determine if pipes need to be replaced or repaired.
For More Information
Contact Rhetta Drennan at 503-823-6006. Before and during construction, we will be sending regular email updates to keep you posted about the schedule, construction activities, possible traffic detours and delays, parking restrictions and other impacts. We encourage you to sign up now to be added to the project's email update list. Send an email to Rhetta Drennan with “Woodlawn-King” in the subject line to receive project updates by email.
Please let us know if you have concerns such as business operations, disability issues or medical or business deliveries.