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RE: NASCAR Pedestrian Bridge Collapse

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The first truly informative news story I have read is at

It would appear that the grout used to fill the tapered voids formed at
midspan by the harping pins contained chloride. Read the ENR article, it is
written much better than the poorly written AP story that has been recycled
through the various news bureas for the past five days.

Brent Koch
Koch Engineering, Inc.
Livermore, CA