1. A method for monitoring the state of a foundation supporting a structure and embedded in the ground, comprising the following steps: acquiring, using a set of sensors placed on the structure, a set of measurements relating to the foundation and/or to the structure, according to a determined mode of acquisition; computing, from said set of measurements, a set of state indicators characteristic of an embedding stiffness of the foundation; performing a comparison between a set of values derived from the set of computed state indicators and a set of thresholds; and evaluating a state of the foundation based on a result of said comparison.