At their peak, the tallest columns on the Willamette River Bridge are 43 feet tall. To pipe in the concrete that will become a support for the bridge, an impressive contraption carries the concrete to new heights. It’s a pretty impressive thing to see in action.
A pouring hose is attached to the end of a boom that is roughly 138 feet long, allowing a pump to place concrete at a rate of up to 200 cubic yards per hour. Due to the large amount of forms that create the skeleton of the bridge columns, beams and arches limit the production rate of the pump to around 15 cubic yards per hour.
These pictures show the long hose and boom pouring concrete into a column near Franklin Boulevard. You may have seen it has you drove past. There will be more opportunities to see this unusual concrete pouring equipment in action as work on the northbound bridge continues.
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