That tunnel also carries trains for NJ Transit, which means more commuter service can be restored.

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None of NJ Transit's 11 commuter rail lines were spared, Gov. Chris Christie said Tuesday.

WSJ: Buses Back, But Subways Could Take Days Longer

It will ease access to bare, gritty platforms for Amtrak, NJ Transit and Long Island Rail Road.

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Bus service could be restored sooner than rail, an NJ Transit spokesman said, since bus facilities only suffered minor damage.

WSJ: Buses Back, But Subways Could Take Days Longer

The railroad borrowed heavy duty equipment from the MTA and NJ Transit to get some sections of track back in service.

WSJ: PATH's Road Back Is Rocky

More closely watched as the storm approached were the region's commuter rail lines, including Metro-North, Long Island Rail Road and NJ Transit.

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Elsewhere, waters rushed into two of the four tunnels used by the Long Island Rail Road, Amtrak and NJ Transit under the East River between Manhattan and Queens.

WSJ: Buses Back, But Subways Could Take Days Longer