One tube at the Brooklyn Battery/Hugh L. Carey tunnel will be closed all Weekend for repair work.
The other tube will have one lane heading into Manhattan and one lane into Brooklyn.
Motorists are advised to expect delays and use an alternate route if possible.
The work includes replacing the tunnel's 1950's electrical system, which provides the necessary electrical power to run the tunnel's ventilation, lighting, drainage, and communication systems.
The tunnel extends from the southern tip of Manhattan to Brooklyn's Red Hook neighborhood.
It is owned by the City of New York and operated by the MTA Bridges and Tunnels, an affiliate agency of the Metropolitan Transportation Authority and has a total of four ventilation buildings: two in Manhattan, one in Brooklyn, and one on Governors Island that can completely change the air inside the tunnel every 90 seconds.
The tunnel was officially named after former New York Governor Hugh Carey in December 2010.