I built the stone bridge off feudal tools, how can this be removed?

The simplest method to remove the bridge

Please note: This below solution will remove all Stone blocks from the server

Turn off the server and run the below query using HeidiSql or a similar program

DELETE FROM movable_objects WHERE ObjectTypeID = '1374';
DELETE FROM objects_patch WHERE ObjectTypeID = '1374';

when the server starts back up it may take some time to start back up - This is normal.