The planned eight miles of track will open Manhattan's East Side to millions of people who now squeeze daily onto the Nos. 4, 5 and 6 subway trains running under Lexington Avenue.
An MTA spokesman said late Monday night that water had reached into all five subway tubes that stretch under the East River between Lower Manhattan and Brooklyn and the Steinway tube between Midtown and Queens.
With the Mets entering at 11 games under .500 and the Yankees playing without several of their injured All-Stars, the Subway Series seemed to have lost much of its luster.