What's happening now
Columns, columns, columns
Now that we've finished pouring the concrete floor and a little over 70% of the wall sections of the reservoir, what's next? In the coming months, crews will begin pouring concrete for the 117 columns that will support the lid (roof) of the reservoir. At the same time, they’ll begin pouring concrete for the lid.
What to expect:
- This work will continue through the summer and into next fall.
- Fewer trucks! About 100 trucks were needed for each floor pour. In this phase, pours will require 10 to 20 trucks and the work will take less time to complete.
- Trucks will continue to use the same routes along SW Kingston Avenue and SW Sherwood Boulevard to access the site.
- Crews will pour columns about once a week through March. Roof pours will happen once or twice per week as schedules allow. Hours will remain the same (approximately 3:00 a.m. to 6:00 p.m.), with early morning activity to keep the concrete cool.
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Above: Column supports are put in place for the first column pour.
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Pipe Supports
In addition to pouring columns and walls, crews are also making concrete and rebar supports for the large pipes that line the interior of the reservoir. These structures are designed to hold the pipes in place and prevent movement in the event of an earthquake.
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Above: Concrete and rebar are used to build pipe supports.
Left: Rebar before concrete is added.
Right: Concrete poured and cured for a complete pipe support. |
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Did you ever wonder...
What’s it like under that utility access hole (“manhole”) cover? Earlier this week, we received a delivery of five utility access holes that will be placed along a stormwater pipeline in the lower reservoir area to allow crews to access underground pipes. These columns will be installed so that just their very top face will be visible, and the rest of the column will form the underground hole.
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Spread the word!
Help us share these important updates with your neighbors. Anyone with an email address can sign-up for updates here.
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 503-865-6054
 Water service emergencies
503-823-4874
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The Washington Park Reservoir Improvement Project will create a more earthquake-resistant water supply for residents and businesses on Portland’s west side, including 20 schools, 5 hospital complexes, and more than 60 parks.
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