Construction at the Hugh L. Carey Tunnel between Manhattan and Brooklyn may negatively affect driving times until work removing obsolete toll booths is complete, officials say.

The tunnel switched to cashless tolling in January, but the Metropolitan Transportation Authority has just shifted the construction area from the west side of the plaza to the center lanes.

The work will lead to a handful of road closures: The individual approach lanes and exits, the Clinton Street ramp and the Hamilton Avenue entrance to the Gowanus Expressway will all be closed for about three weeks.

The MTA says drivers should allow for longer travel times or take a different route.