Norcure® and Galvashield® Extend Service Life of I-480 Bridge, Bridge Builder Magazine, 2004

Constructed in the early 1970’s, the mainline structure of the I-480 viaduct through downtown Omaha, Nebraska to the Missouri River consists of 1.5 miles of concrete deck and steel box girders supported by 66 large conventionally reinforced concrete piers. By the mid-1990s, the 30 year-old structure was experiencing deterioration of the concrete deck and concrete substructure. This deterioration was due to chloride-induced corrosion of the reinforcing steel.

In 2002, Norcure Electrochemical Chloride Extraction was used on twenty-six of the piers with the highest chloride contamination levels (approximately 16,000 ft2) and Galvashield XP embedded galvanic anodes were used in the patch repairs on the remaining piers. All piers were then coated to prevent future chloride contamination.   (read more)