Changing the face of Charleston : The unbuilding of the Grace and Pearman Bridges
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Unbuilding Highlights
(Apr 10)
Meeting St. Stories
(Jul 10 2006)
East Bay Stories
(Oct 10 2006)
Drum Island Stories
(Feb 17)
Pearman Bridge Stories
(Apr 3)
Grace Bridge Stories
(Apr 3)
Imposions: Prep and boom
(Mar 27)
Unbuilding Bridge Blog
(July 23 2006)
Unbuilding Challenges
(Mar 13)
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(Feb 20)
Unbuilding Stories
(Mar 13)
Video and Sounds
(Feb 28)

June 19, 2006:
Mickey disappears another substructure

From halfway around the world, I'm disoriented. This is the current active worksite with C-3 on the left and Michael's high-boy 1250 whacking away at P-9

And for orientation, our reference photo with pier labels

Timmy with his low-boy whacking away at P-10

The P-7 blast site - shock tubes in place and ready to blow

Mickey's John Henry ready to work on the Grace pier that was repaired in the late 50s - P-6. The John Henry will dive onto P-6 and drill from on top of the pier cap.

Now its 3 pm (14:57:12 by Sparky's camera) and the before

Ignition sequence

T = 0 sec      T = 0.033 sec

T = 0.067 sec      T = 0.100 sec

T = 0.133 sec      T = 0.167 sec

T = 0.200 sec      T = 0.233 sec

T = 0.267 sec      T = 0.300 sec

T = 0.333 sec      T = 0.367 sec

T = 0.400 sec      T = 0.433 sec

T = 0.467 sec











Now to get back to work, Pat on the left with the Capt. Gary is positioning the barge near C-3

and the John Henry is getting set up to drive onto the P-6 cap for some serious drilling of the platform. It will be interesing to see what happens to the pylon supports under the concrete cap.

from a different perspective

This looks like the Grace P-8 and partial P-9 on the left and the Pearman C-1 footing in the foreground with C-2 and C-3 in the background.

A last view of the worksite (P-8 and P-9 with Michael's high reach arm hammering away)

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Attribution: C. Frank Starmer and Sparky Witte from