Long Island Rail Road service to Grand Central Madison will begin Wednesday, the MTA announced in a press release Monday night.

The first train to Grand Central Madison will be from Jamaica, Queens at 10:45 a.m. on Wednesday, Jan. 25 and run express to Grand Central Madison, where it will arrive at 11:07 a.m., according to the MTA.

The new Grand Central Madison station, which sits 17 stories below street level, will allow the LIRR riders that work on Manhattan’s east side to avoid doubling back from Penn Station.

For the first three weeks, the only LIRR trains in and out of Grand Central will be a shuttle service between there and Jamaica, the MTA said. The Grand Central Direct line will run once every hour during peak travel times on weekdays — arriving at the station between 6:30 a.m. and 10 a.m., and departing between 4:30 p.m. and 7:30 p.m. — and once every 30 minutes otherwise.

The trains will be available between 6:15 a.m. and 8 p.m. on weekdays and from 7 a.m. to 11 p.m. on weekends, the release said.

The MTA did not say when a full train schedule of service from Long Island to Grand Central will begin, but boasted LIRR service will increase by 41% when the lines are fully operational.

LIRR riders can use Penn Station tickets to travel to Grand Central Madison, the MTA said, because the two destinations are in the same fare zone.

The grand opening was originally scheduled for the end of 2022, but was pushed back in December due to unspecified “additional work” on one area of the 700,000 square foot terminal, according to the MTA.

Earlier in January, MTA Chairman and CEO Janno Lieber said issues with an exhaust fan were holding up the terminal’s opening.

The project was originally scheduled to open in 2011.

Commuters can find schedules for the shuttle service between Jamaica and Grand Central Madison on the MTA’s TrainTime app or at new.mta.info/GrandCentralMadison.