1993 - Block Island Southeast moved 300 feet back from the edge.

In 1990 the Coast Guard deactivated Block Island Southeast Light and replaced it with a skeleton tower. The lighthouse, once over 300 feet from the edge of the cliff, was then about 55 feet from the edge of the eroding bluff. The Block Island Southeast Lighthouse Foundation raised about $2 million and in August of 1993 the lighthouse was moved back 300 feet from the edge by International Chimney of Buffalo, NY. The light was reactivated on August 27, 1994.

http://www.lighthousedepot.com/database/uniquelighthouse.cfm?value=160

Bert