Abstract: The present invention discloses a method and system for maintaining the position of headstones in a cemetery. Previously, headstones installed at a cemetery may shift over time. As the ground beneath the headstone is subjected to erosion from frost, rain, snow, and wind, the headstone may settle and eventually sink partially into the ground. In some cases the headstones may become loose and fall, possibly getting damaged. The present invention provides a subterranean bridge comprised of concrete that the headstone rests upon. In this way, the headstone is supported by the concrete bridge structure, and is less affected by soil conditions, ground water, and freeze-thaw cycles. Since, by definition, the headstones are to be at the cemetery for an indefinite period of time, it is desirable to have a system to maintain the position of the headstone for the long term. The bridge is comprised of two caissons and a plinth.