System, device and method for providing public, high-density bicycle storage and protection from elements and theft. System includes overhead conveyors from which bicycles are hung in a near side/far side arrangement where handlebars of only every other bicycle are aligned. Bicycles are rolled into a loading station on their back wheels by user and secured, from the front wheel, to a hook that is removably coupled to a load hoist. Access to loading station is controlled by an access control panel. Load hoist lifts the hook to place the bicycle in a hanging position. Robotic arm of a robotic elevator grasps, retracts and lowers (or raises) the bicycle into a multilevel storage area and onto overhead conveyors. Users may be bike-share users or storage users who store the particular bicycle they own.