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Definitions
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Live Bridge Cam from City of Yankton
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Definitions

Chute: The "chute" is an old river channel that has filled with sediment over the years.

As part of our contract, the agencies requested that this chute be excavated, so as to provide a backwater situation. The purpose of the chute is to provide additional habitat for fish and wildlife, while providing a close and easily accessible place to get fill material. This material is being used to build the approach to the bridge.

Future plans for the chute are to open the upper (West) end. Which will create a flowing water situation. The agencies believe that this may create a suitable spawning environment for pallid sturgeon and other fish species.

The NPS plans on building a trail system thru this newly acquired ROW, South of the chute.

"O" Cell: The "O" Cell is 3 separate hydraulic jacks for use in determining the final elevation of the production shafts. They were placed 27 ft from the bottom of the rebar cage. This distance can vary from shaft to shaft.

NOTE: As the rebar cage is lowered into the ground, the employees of Load Test and Jensen Construction Co. check the load cell analyzers, wires, and hydraulic lines on the way down, and remove bracing and install rebar spacers.

Tremie: The tremie is a water tight funnel to get the concrete to the bottom of the shaft without contamination. It stays a minimum of 5 ft into the concrete at all times. As the shaft is filled with concrete the water is forced up and pumped out of the shaft. The tremie is approximately 120' long in a 112' shaft, and is guided into the middle of the shaft with an extra steel "funnel", which also helps support the two halves of the rebar cage.