NEW YORK — Coast Guard crews are enforcing a safety zone on the Hudson River around the Tappan Zee Bridge after a crane collapsed Tuesday afternoon. At approximately 12:15 p.m., Tuesday, Coast Guard Sector New York received a report of a partial crane collapse across the western end of the Tappan Zee Bridge, which has closed the roadway to traffic for an undetermined period of time. A crane operator was safely recovered from the water by a Westchester County Marine unit after the collapse. A Smallboat crew from Coast Guard Station New York is enforcing a safety zone around the site of the incident and will remain in place for as long as necessary. The major implications of the safety zone are as follows: no entry into the immediate vicinity of the incident, heed caution for any debris that could be in the water, and for vessels to proceed at a slow speed to prevent a wake. A response team from Sector New York is on scene to examine the area for any pollution and damage to the barges. The cause of the incident is currently under investigation.