That pesky East River. Think of all the space New Yorkers could enjoy if it were solid land. Just a decade after T. Kennard Thomson gave his proposal, John A. Harriss, special deputy commissioner in charge of traffic, proposed erecting a wide boulevard between Manhattan and Brooklyn. This would require damming and draining the East River between the Williamsburg Bridge and the Harlem River. A new city hall atop the boulevard would house a police, health, music and art center, while new high schools, playgrounds, and even a theater district could serve all four boroughs. Beneath the boulevard would be parking spaces, subway lines, east and west ramps, as well as a tunnel for large vehicles.
Read the full story in "Plan to Drain a New York River"