Results of Ambient Vibration Testing (AVT) measurements in free-field conditions are presented, estimating the predominant soil motion periods (Ts) as well as the shear wave velocity profiles (Vs) as a function of depth, to help address the detected issues in an anthropic soil zone (infills, with a length of 80 meters), over the tunnel layout (approximately 35 meters deep) of the METRO construction project, westward of Mexico City, where differential settlements on the ground surface and potential damage to local residential structures have been observed. A total of 23 triaxial accelerometers were used, strategically located along two Walkways (streets) within the area of influence of the interest zone. AVT results show that the estimated Ts periods within the anthropic soil zone do not exhibit significant changes, for practical purposes, with variations between 0.330 and 0.417 seconds, consistent with the expected values for a stiff Lomas-type soil, according to the Earthquake Standards of the RCCM-2017, currently in force in Mexico City. In relation to the estimation of the shear wave velocity (Vs) model as a function of depth, using 60-minute recordings synchronized in time with a GPS, it was corroborated that the soil characteristics are of a stiff type, consistent with the previously shown results of the dominant periods of soil motion (Ts); initially, there is an average thickness of 6 to 9 meters of loosely compacted material (poorly consolidated sediments) with velocities less than 200 m/s, and the shear wave velocity gradually increases as a function of depth, with velocities of 500 and 600 m/s at depths of approximately 40 and 45 meters, respectively.