How Big Is The New York Underground?
However miserable the system may seem to the public, it has 24 lines, 659 miles of passenger track (443 miles of which are underground), an additional 186 miles of rail-yard track, 72 bridges, 14 under-river tunnels (called “tubes”), 199 fan plants, 39,000 sidewalk ventilation grates, 11,450 electric signals, 250,000 How deep is the New York …
