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Mississippi River Drilling - June 2010

• Crews work on a barge on the west bank of the Mississippi.
• This structure, set in the test shaft, lets crews pour and monitor concrete.
• Crews prepare the structure to monitor the test shaft.
• Crews measure the depth of the test shaft to make sure no debris has entered the shaft.
• A tug ferries equipment across the river.
• A worker adds more water to the test shaft to keep debris out of the shaft.
• Engineers check the plans while working on the drilled shaft.
• A worker lubricates the treads on a crane on the barge.
• A view of the drilling operation from the river.
• Crews drill for the bridge foundations while waiting for results from the test shaft.
• A worker hoses river debris off the drilling platform.
• Crews monitor progress during drilling.
• Crews remove the drill from one of the shafts to remove debris and dirt.

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Disclaimer: Commercial use of these photos is prohibited without permission from the Missouri Department of Transportation (contact email/phone #). All photos should be credited to the Missouri Department of Transportation.