Abba_S
In Connecticut these small cemeteries owned by defunct congregations and organizations are usually taken over by the Jewish Federations.
Massachusetts has the Jewish Cemetery Association, which has assumed ownership and care for both abandoned cemeteries and those of functioning congregations. My BIL is Rav of small congregation in Massachusetts with a cemetery going back 100+ years. They turned it over to JCAM along with funds to endow the upkeep. Professional management and full time groundskeepers can really cut costs.
edited by mod to remove link