Carbon steel coupons were buried for 6 months in an artificial clay soil initially set at 75% saturation with a 0.01 M NaCl solution. Wet/dry cycles were applied to the system so as to induce strong modifications of the steel/soil interface. The steel coupons were set in a large soil box, as far as possible from each other, so that they behave differently as the drying/wetting of the soil was heterogeneous. The electrochemical analysis of the steel/soil interface was achieved by combining voltammetry, used to determine corrosion potential and corrosion rate, and electrochemical impedance spectroscopy, used to estimate the active area of the electrode via the determination of the soil electrolyte resistance. This analysis allowed monitoring the evolution of the steel/soil interface during the wetting and drying stages of the system and gave information on the specific behavior of each coupon. (C) 2017 The Electrochemical Society. All rights reserved.