Under FHWA Demonstration Project No. 34, "Cathodic Protection for Reinforced Concrete Bridge Decks," a non-slotted cathodic protection system was installed on the deck of the Yakima River Bridge 24/5, near Yakima, Washington, in the summer of 1985. The project involved repairing the deck, then fastening Raychem premanufactured anodes to the deck to impress current to the top mat rebar. Impressing current through the concrete to the top mat steel prevents further corrosion of the steel. A latex modified concrete overlay was placed over the deck anode. The objective of the demonstration project was to familiarize the Washington State DOT with this new technology. This objective was fulfilled.
Some problem areas with the system were identified during the work:
These problems need to be overcome to obtain a better quality product.