1120 SW 5th Avenue, Room 1000, Portland, OR 97204
Work has begun on a damaged section of the Inverness Force Main suspended under the Columbia Slough pedestrian bridge over the Columbia Slough. Repairing this pipe is essential for protecting water quality and public health.
The 11-mile force main carries flow from the Inverness Pump Station east of I-205 to the Columbia Boulevard Wastewater Treatment Plant. A 36-inch pipe splits into a 20-inch and a 30-inch main two miles from the treatment plant and both pipes run under the pedestrian bridge.
When maintenance crews discovered the corrosion-caused leak in the 30-inch pipe, BES transferred flow to the 20-inch pipe. The project will insert a 24-inch HDPE pipe into the damaged main and connect to the existing pipe at both ends of the bridge. Repairs will close the bridge to pedestrians and bicyclists for up to 90 days.
The Columbia Slough bridge north of the Columbia Boulevard Wastewater Treatment Plant will be closed for up to 90 days.
Closure is from January 30 to April 29, 2017.