This final report presents research findings of a comparative laboratory study evaluating the corrosion resistance of 12 alternative metallic reinforcing materials embedded for about 18 mo in 8 large-scale concrete slabs that simulated typical reinforced concrete bridge decks. Based on electrochemical test data and autopsy results, the materials were divided into three groups: four products in the best performance group, six products in the intermediate performance group, and two products in the poorest performance group.

This study was conducted as part of the Federal Highway Administration’s Long-Term Bridge Performance Program. The products from this program will be a collection of data-driven tools, including predictive and forecasting models, that will enhance the abilities of bridge owners to optimize their management of bridges. This report should be of interest to bridge program personnel from Federal, State, and local transportation departments. Also, bridge design engineers, specification writers, manufacturers/suppliers of reinforcing steel, and reinforcing detailers would benefit from reading this report.