Update - Wednesday at 6:15 A.M.:

Amtrak has restored service between Washington and Boston for Wednesday. A full Acela Express schedule is running between Washington and Boston on Wednesday, and most Northeast Regional trains are running between Richmond/Lynchburg/Washington and Boston.

This also obviously means that trains can get from Washington to New York after several days of travelers in D.C. being unable to take Amtrak beyond Philadelphia. Trains were unable to run between Philadelphia and New York due to flooding and flood damage near Trenton, N.J. While Amtrak’s engineering teams have made repairs to the area damaged by flooding, there might still be delays traveling near Trenton.

Original Post - Tuesday at 3 p.m.: More Amtrak service has been restored in the wake of Hurricane Irene, but travelers in the Northeast are still unable to travel through a key area due to flood damage.

Trains are unable to run between Philadelphia and New York due to flood damage near Trenton, N.J., according to the latest update from the rail agency. Amtrak trains are running between New York City and Boston, while most Northeast Regional routes are running south of Philadelphia.

The Auto Train, which carries commuters and cars between Sanford, Fla., and Lorton, Va., resumes service on Wednesday.

Travelers who have paid for canceled trains can contact Amtrak for refunds or to rebook without any penalty, according to the agency.