Each modal will have a div id. Using that id, give each modal a specific URL through which a user can directly access the content in the modal.
For example, a modal with the id "my-modal" should have a local anchor of "#my-modal." Visiting [url removed, login to view] will display the modal content (in its data-toggle "on" state).
Feel free to extend the Bootstrap [url removed, login to view] file (attached) or write your own script!