Gen. Andrew Cuomo

Kosciuszko Bridge has fallen down, fallen down

By GREGORY ZELLER // The old Kosciuszko Bridge got blowed up real good. The last standing sections of the 78-year-old Brooklyn-Queens span were imploded Sunday in the pyrotechnically spectacular penultimate chapter of New York State’s $873 million, way-ahead-of-schedule replacement effort. The first span of the new Kosciuszko Bridge – actually, two state-of-the-art cable-supported bridges over Newtown Creek – opened in April, marking completion of the project’s $555 million first phase. What will be the Queens-bound…