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)
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(Apr 3)
Imposions: Prep and boom
(Mar 27)
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(July 23 2006)
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(Mar 13)
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(Feb 20)
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(Mar 13)
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(Feb 28)

October 29, 2005:
Chipping away at the Pearman roadway

There is an interesting challenge with removing the Pearman roadway. Initially the plan was to use the jack hammer to drop segments of roadway into the water and then later removed. However Bob McCabe

and his team worked out a clever alternative. Instead of hammering all the roadway, only lines of roadway overlaying the steel girders are hammered, thus exposing the embedded rebar. Then a perpendicular line is hammered from one side of the roadway to the other, thus outlining a 1/4th width bite of roadway. The shear then cuts the rebar, lifts the segment up and then pushes it to the recycling pile. The end result is that only a very small fraction of the roadway falls into the water below - thus avoiding a large water recovery operation and minimizing environmental insults.

Here, the morning sun lights up the Ravenel Bridge and the Pearman worksite

The is the setup as viewed from the Grace Bridge - the shear is beind the hammer which is drawing lines along the girder tops thus exposing the rebar for a segment of roadway. You can see Roy Delpriete hammering the roadway, sort of drawing a map for Kevin (in the shear behind) to follow.

Here is a closer view of Roy is hammering a line along the girder, exposing the embedded rebar.

Beginning a line along the edge girder -

and then broadening the line, equal to the girder width. Note the exposed rebar to be cut by Kevin's shear.

Next, exchanging the hammer for the scissors

and then some rebar cutting

Here is Kevin Atkinson lifting a segment

then rotating it upward

then pushing it toward the recycle pile

And here you can see the parallel girders and to the left, the gap left from the just removed 1/4th bite of roadway.

Meanwhile, Mickey Roger's guys are continuing to drill holes in the Pearman piers.

at the pier cap

A closer view

And toward Drum Island, nothing remains of Charleston's Stonehenge of Pearman support piers

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Attribution: C. Frank Starmer and Sparky Witte from