Tunneling process is one of the most important construction activities that heavily depends on the site geological conditions. For this reason, it is very important to identify and predict the geological hazardous zones such as faults and crushed zones at tunnel construction site. Applied methods for this purpose are divided into two general categories: destructive and nondestructive methods. A combination of resistivity and induction polarization, electrical tomography, is used in this study. Electrical tomography is one of the important geophysical methods, which is based on the mapping of sub-surface data of chargeability and resistivity. According to the geological studies and the drilling results along the tunnel, indicate that there is a good conformity between electrical tomography data with the geological map and the tunnel as built map.