A New Look at Galvanized Bridges

by Rita Robison, Senior Editor; Civil Engineering Magazine, 345 E. 47th St., New York, NY 10017,


Serial Information: Civil Engineering—ASCE, 1991, Vol. 61, Issue 7, Pg. 52-55


Document Type: Feature article

Abstract: Engineers are rediscovering that galvanizing is one of the longest lasting methods of imparting corrosion protection to steel bridges. It also avoids the stringent new EPA regulations that require recapture of lead-contaminated paint chips, dust and sand when a painted bridge is sandblasted. In Ohio, one county engineer designed a 108 ft long pony truss, assembled it, dismantled it for shipping to a galvanizing plant, then reassembled it on site. In another Ohio county, engineers have designed a three-span, continuous steel beam structure to be completely galvanized; contracts will be let late in 1991, with completion expected in 1992. Both these new structures follow the example of the first galvanized bridge in the U.S., built in 1966 in rural Michigan, which is still in excellent condition. Galvanized bridges in many other states are also reported in excellent condition, although eventually many will require painting after the galvanizing weathers.

Subject Headings: Coating | Corrosion | Steel bridges | Zinc

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