Dewatering for Bridge Footing Repair
Clear Lake, CA (2004)
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This bridge had a cracked footing in need of repair. Several 3' high AquaDams® were used to isolate and dewater the work area.
Clear Lake, CA
The fill tubes are pulled up through holes in the top of the AquaDam® and tied off. This is done because of a lack of a good bank to start the AquaDam®. Another alternative would have been to create a small earthen berm along the shoreline to start the AquaDam® from.
Clear Lake, CA
The AquaDams® are connected to make a continuous run of over 300' in length running down the middle of the stream. First one side will be dewatered and excavated, and then the AquaDams® on the ends will be deflated and moved to the opposite bank to isolate the other side.
Clear Lake, CA
A view at the upstream end of the AquaDam®. The stream narrows to about 20' wide and 8" deep. Notice the two connections: the AquaDam® in the background can be moved from bank to bank without moving or deflating the other units. This is because both ends of the middle AquaDam® are closed with a connection collar. This unit was installed first. The other AquaDams® are dependent upon this unit to maintain their inner water level.
Clear Lake, CA