It occupied a tract and included 49 industrial buildings and an earthen causeway that was built into the Housatonic River mudflats to provide for access by seaplanes.
Because of the Base Realignment and Closure actions of the United States Department of Defense, closure of the plant was recommended in July 1995. The SAEP closed on 30 September 1998. For the next 11 years the Army was involved with "Team Stratford" to develop the property. The United States Army, which owns the site, auctioned it off on 19 March 2008 with a winning bid of $9,612,000 which also includes the facility of over 50 buildings. This bid failed to be paid off and is now being placed for rebid. Currently Robert Hartmann of Hartmann Development has a $1 billion plan to develop the former Army engine plant into a destination resort.