Rendering of the new Willamette River Bridge

Tuesday, March 27, 2012

Scenes of shaft drilling

From ODOT-
The drilling of the shafts is a facinating activity to watch! Here are some rare close-up scenes.
This worker standing next to the drill bit or auger illustrates just how large it is.

When crews first lower the drill into the target, they have to measure the distance from the auger to the walls of the shaft, ensureing that it is no more than three inches.

While watching the auger come out of the ground, we see the siltstone that is left on the machine that crews will need to clean off.

This shaft, in the center of the river, has been cleared of all earth debris.

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