Spuyten Duyvil Creek, tidal channel, now a ship canal, c.1 mi (1.6 km) long, SE N.Y., in New York City. It separates the northern tip of Manhattan island from the mainland and connects the Hudson and the Harlem rivers. It is crossed by the Henry Hudson Bridge and the Amtrak RR Bridge; the line was restored to its mainline passenger function in 1991.