18 NOVEMBER 2017 MATERIALS PERFORMANCE NACE INTERNATIONAL: VOL. 56, NO. 11
MATERIAL MATTERS
Continued f rom page 17
initial failure. The cost for the entire proj-
ect, ranging from the investigation to the
f inal repairs, was $15 million, according
to WisDOT. To this point, the bridge has
held up as designed. But Abu-Yosef hopes
other jurisdictions will learn from the Leo
Frigo Bridge case, or similar failures
could easily be repeated elsewhere.
"These jurisdictions have a good
record of the soil prof ile and characteris-
tics," he says. "After the failure, [WisDOT]
went back to their database and identi-
f ied other bridges with similar soil condi-
tions, so they went back and evaluated
corrosion risk at those locations."
"But do other jurisdictions have the
time and resources to do this? Going for-
ward, we need to be making sure that new
bridges are designed properly to mitigate
the corrosion of piles and that protective
coatings can withstand the installation
process without damage," Abu-Yosef says.
Source: Pivot Engineers, pivotengineers.
com. Contact Ali Abu-Yosef, Pivot Engineers—
email: yosef@pivotengineers.com.
References
1 "I-43 Leo Frigo Memorial Bridge: Investiga-
tion Repor t," Wi sc onsin D epar tm ent of
Transportation, May 2015, http://worldcat.
org/oclc/914301239/viewonline (Sept. 26,
2017).
2 A. Abu-Yosef, "Microbes: The Unusual Sus-
pects—The Case of Leo Frigo Memorial
Bridge Failure," NACE Central Area Confer-
ence (Houston , TX: NACE International ,
2017).
—Ben DuBose
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