Environmental Services will repair about 360 feet of concrete public sewer pipes in N Schmeer Road at the intersection and west of N Vancouver Avenue (see map). Pipe repairs will extend from the intersection to the west in Schmeer Road. The 41-year-old pipes and a manhole in the intersection are severely deteriorated from sanitary sewer flows. This project will repair the pipes, replace the manhole, and install equipment to minimize corrosion. These improvements will help protect public health, water quality, and the Columbia Slough Watershed.
Construction will occur in two phases - sewer pipe repair and manhole installation. The first phase will begin as early as July or August and take a week to complete. The second phase will begin in September. All work is expected to be finished by the end of November.
In general, work will occur 7 a.m. to 6 p.m. Monday through Friday, and the same hours on Saturday if needed.
Sanitary sewage flowing through the manhole and pipes has corroded the concrete. This project will employ a combination of open trench and trenchless construction methods to make necessary repairs. Using open trench excavation, crews will replace the manhole and install new equipment to minimize corrosion. This is the traditional and most common method of sewer construction. It consists of excavating down to and exposing the existing pipe and manhole, replacing it, then backfilling the trench.
To repair the sewer pipes, the city will employ a method called cured-in-place-pipe lining (CIPP). Work crews access the sewer from manholes to insert a flexible liner inside the old pipe. Hot water or steam inflates and cures the liner, which gradually hardens to form a rigid, smooth surface that seals cracks and restores the pipe to near-new condition.
People who live and work near a CIPP repair project can sometimes smell a chemical odor during the pipe-lining work. The odor is from the chemical styrene, which is in the resin liner installed inside the pipe. The odor dissipates quickly once the installation process is complete. The amount of airborne styrene produced by the lining process is not expected to cause health issues for workers or the public.
To learn more and view photos about sewer construction methods, click here.
While reduced travel lanes may be necessary, the goal will be to maintain one travel lane in each direction at all times on Vancouver Way, Schmeer Road, and Vancouver Avenue – and to maintain all turn movements at the intersection of Schmeer Road and Vancouver Avenue. Access to driveways and properties will be provided at all times, although there may be delays. Flaggers will be present to control traffic and help reduce delays during peak commute hours.
The traveling public and larger vehicles wishing to avoid delays at the intersection of Schmeer and Vancouver are advised to use N Interstate Avenue as an alternate route. Optional routes include:
- N Denver Ave to N Interstate Ave to connect to N Schmeer Rd
- N Victory Blvd to N Whitaker Rd to connect to N Schmeer Rd
- N Columbia Blvd to connect to N Vancouver Ave