The New York City subway, whose closure in the lead-up to Tropical Storm Irene was perhaps the most unsettling element of a prodigious storm preparation effort, reopened on a limited schedule on Monday morning.

Nearly all of the subway’s 22 lines, including express and local service, have restored, according to the Metropolitan Transportation Authority Web site. Fewer trains will run than in a normal morning rush.

Still, other parts of the region’s mass transit network are likely to remain partially paralyzed for the morning commute, including the suburban commuter rail networks that carry thousands of workers to hospitals, investment houses and corner bodegas alike.

The Metro-North Railroad said that it would operate no trains at all on Monday on all three of its lines, which serve areas of New York and Connecticut. Its tracks sustained extensive damage from flooding, fallen trees, and mudslides. The Long Island Rail Road said that it is “operating near-normal service this morning on six of its branches,” but with service suspended to certain stops.