I
mpressed current cathodic protection (ICCP) has been used to prevent cor- rosion of reinforcing steel in highway bridge decks since 1973. Studies have
proven that ICCP effectively mitigates corrosion damage of reinforced concrete structures.1
To date, ICCP has been in-
stalled on more than 200 bridge decks worldwide, totaling more than 3.5 million ft2
(325,150 m2 ) of reinforced concrete
surface. But very little long-term data have been published regarding the ef- fectiveness of ICCP systems for extending the service life of concrete bridge repair. ICCP was installed on eight highway
bridges in Cleveland, Ohio between 1985 and 1994. All of these used a titanium- mixed metal oxide (MMO) mesh anode.