Corrosion is known to be the primary means of deterioration for metallic structures. Reinforced concrete structures are known to be particularly affected by the attack of de-icing chemicals and other reactive agents on the embedded steel reinforcement in the concrete. While the effects of corrosion on concrete infrastructure have been studied extensively, less research has been devoted to the actual methods used to develop the understanding needed to assess the degree of corrosion within the reinforcement. This project is attempt to answer the question of which methodology we can use with a good degree of confidence, in order to be able to properly assess the degree of corrosion in the reinforcement.