NEW YORK - Subway riders traveling between Brooklyn and Manhattan on the 2 and 3 trains on weekends will need to plan ahead as repairs began Friday night on a tunnel damaged during Superstorm Sandy.

The move is part of the Metropolitan Transportation Authority's multi-year effort to fix equipment inside the Clark Street subway tunnel, which runs under the East River.

Repairs will last until next spring.

Reconstruction will be in effect every weekend from 11:45 p.m. Friday until 5 a.m. Monday.

Brooklyn riders will not be able to use the 2 and 3 lines.

Instead, straphangers there can take extended local service on the 4 and 5.

Clark Street and Hoyt Street will both be closed during repairs.

Riders planning to head into Manhattan can transfer on the N, Q, or R at Barclays Center.

Meanwhile, the 2 and 3 will be rerouted in Lower Manhattan.

The 2 will run between the Bronx and South Ferry, making local stops between 34 St-Penn Station and South Ferry.

The 3 will be going between 148th and 14th streets.

Park Place and Wall Street stations will both be closed.

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