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Operations and maintenance staff with Portland District, U.S. Army Corps of Engineers (Corps) help seat a floating bulkhead—a moveable wall used to block off the flow of water—in place behind the upstream side gate of the John Day Dam navigation lock July 26 following a malfunction of the gate due to a broken guide wheel. While the Corps works to fix the 215,000-pound vertical lift gate, it’s continuing to pass vessels through the lock by essentially using the floating bulkhead, also referred to as a caisson, as a temporary gate. Currently, vessel lockages, which typically take about 45 minutes, are taking twice as long. The guide wheels, two of which are attached to each side of the gate, act as rollers that keep the gate aligned as it moves up and down through its normal range of motion during lockages. (U.S. Army Corps of Engineers photo by Chris Gaylord)
| Date Taken: | 07.26.2022 |
| Date Posted: | 07.29.2022 14:06 |
| Photo ID: | 7343263 |
| VIRIN: | 220726-A-KH311-0071 |
| Resolution: | 6016x4016 |
| Size: | 13.27 MB |
| Location: | JOHN DAY DAM, OREGON, US |
| Web Views: | 15 |
| Downloads: | 3 |
This work, Damaged navigation lock slows Columbia River traffic at John Day Dam [Image 27 of 27], by Christopher Gaylord, identified by DVIDS, must comply with the restrictions shown on https://www.dvidshub.net/about/copyright.
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