Minnesota bridge collapse
prompts safety assurance of Golden Gate Bridge
In the wake of Wednesday's total bridge collapse in Minnesota,
officials in San Francisco provided assurances of the Golden Gate
Bridge' structural integrity.
By Ari Barack
August 3, 2007
In the wake of Wednesday's deadly bridge collapse in Minnesota,
a Golden Gate Bridge spokeswoman yesterday gave reassurances that
the event has little bearing on the structural integrity of the
Bay Area's treasured landmark.
The arch truss bridge that collapsed over the Mississippi River
is completely different than the Golden Gate Bridge's long-span
suspension design, according to spokeswoman Mary Currie.
"The two (bridges) have nothing in common," Currie
said. "Certainly we're concerned about earthquakes,"
as well as wind conditions and corrosion damage from fog, she
"In order to ensure the structural integrity of the span"
the bridge has an ongoing maintenance program to work on corrosion
protection, Currie said.
In addition to day-to-day maintenance, the bridge has undertaken
several efforts over the past decades to ensure its stability
and safety, according to Currie.
Along with replacement of the bridge's vertical suspender ropes
in the 1970s, and replacement of the deck of the bridge in the
1980s, the bridge began a $460 million seismic retrofit project
in 1997, which is expected to last another six to eight years,
So far, the bridge's north and south approach viaducts have been
retrofitted, while work on the bridge's main span and main towers
are still yet to be completed.
According to Currie, restoration of the two main cables that
go on and over the towers could begin later this year.
"Between all of those projects, the bridge is in good shape,"
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