ALBANY — The state is considering turning the Tappan Zee Bridge into a “greenway” instead of demolishing it when an adjacent span is built, Gov. Cuomo said yesterday.

Cuomo said that his administration is discussing whether to turn the current 57-year-old bridge into a “green” walkway.

Officials have said a new bridge carrying the Thruway between Rockland and Westchester counties would cost $5.2 billion.