In 2005, during the reconstruction of Route 9A, the roof of the Battery Park Underpass was extended to the north by about 80 feet to provide a U-turn lane and amenities for pedestrians and bicyclists.
During Superstorm Sandy, the tunnel filled completely with seawater and required major repairs.
Plans for extension
There have been three proposals to extend the tunnel north on the FDR Drive side.
In 1971, it was suggested that the South Street Viaduct be turned into a tunnel, essentially extending the underpass north to the Brooklyn Bridge
In 2002, the Downtown Alliance, the local Business improvement district, called for a 350-foot (105 m) extension to the underpass to create a plaza in front of the Battery Maritime Building. The estimated cost was $70 million.
In 2005, Mayor Michael Bloomberg also called for an extension of the underpass near the Battery Maritime Building as part of a plan to rehabilitate the South Street Viaduct.
Western entrance from the West Side Highway
^ "City Opens Underpass at Battery, $10,000,000 Link in Express Route". The New York Times. April 11, 1951. p. 31. Retrieved 2010-04-12.
"Reopening of the Battery Park Underpass to Westbound Buses for Afternoon Rush Hour Beginning Today and Reopening to All Eastbound Vehicles Beginning Wednesday Nov. 14 During Morning Rush Hour". November 13, 2012.
Guide to Civil Engineering Projects In and Around New York City (2nd ed.). Metropolitan Section, American Society of Civil Engineers. 2009. pp. 61–62.
Dunlap, David W. (November 2, 2005). "A Little Easier Getting Around Downtown". The New York Times. Retrieved 2009-07-25.
"Battery Park Underpass partially repoens". WABC-TV. November 13, 2013. Retrieved April 24, 2014.
Dunlap, David W. (August 1, 2002). "Plans for the Neglected East River Shoreline". The New York Times. Retrieved 2010-10-20.
Dunlap, David W. (March 2, 2005). "Restoring a Missing Link: Lower Manhattan to the East River". The New York Times. Retrieved 2009-07-25.