Abstract
This article reviews major American and Canadian projects where deteriorated concrete bridge decks were replaced by steel orthotropic decks. Both open-rib and closed-rib deck systems, with long-rib spans corresponding to the spacing of existing floorbeams, were used. In three cases, the new decks are fully integrated with the main longitudinal members of the bridge. Wearing surfaces, redecking costs and the future AASHTO Bridge Design specifications provisions for orthotropic decks are discussed. The bridges which were redecked are the Golden Gate bridge, San Francisco; the George Washington bridge, New York; the Lions Gate, Vancouver BC; Throgs Neck Viaducts, New York; Benjamin Franklin bridge, Philadelphia, and the Champlain bridge over the St Lawrence river in Montreal.
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