The Harlem River, shown in red, between the Bronx and Manhattan in New York City

The Harlem River is a tidal strait in New York City that flows 8 miles between the East River and the Hudson River, separating the borough of Manhattan from the Bronx. Part of the current course of the Harlem River is the Harlem River Ship Canal, which runs somewhat south of the former course of the river, isolating a small portion of Manhattan (Marble Hill) on the Bronx side of the river.

The Harlem River is traversed by two legs of the Triborough Bridge (Harlem River Lift, Bronx Kills Crossing) as well as many lesser-known bridges. These bridges cross it from south to north:

• Triborough Bridge
• Willis Ave Bridge (1901)
• Third Ave Bridge (1898)
• Park Ave Bridge (Metro North railroad)
• Madison Ave Bridge
• 145th Street Bridge
• Macombs Dam Bridge
• High Bridge (1842) (aqueduct)
• Alexander Hamilton Bridge (I-95/US 1)
• Washington Bridge
• University Heights Bridge
• Harlem Ship Canal Bridge (also known as Broadway Bridge) (US 9 with 1-9 subway on the upper level)
• Henry Hudson Bridge (Henry Hudson Parkway/Route 9A )
• Sputyen Duyvil Bridge (Amtrak and Metro North railroad)

Kings Bridge was one of two bridges across the old alignment at Marble Hill.

Like the East River, the Harlem is actually a tidal estuary.

See also

• Geography of New York Harbor
• List of New York rivers