The Brooklyn-Battery Tunnel — which was flooded with millions of gallons of water during superstorm Sandy — will be reopened soon, according to a government source.

Gov. Cuomo, MTA chairman Joseph Lhota and US Secretary of Transportation Ray LaHood are expected to make the announcement later today.

The source said it would be a “limited” reopening.

The Tunnel — which officials recently renamed after form Gov. Hugh Carey — was the most damaged of all the major crossings in the region during the storm.

It is the only one that is still closed due to Sandy.