Much of the old BMT Brighton, Sea Beach and West
End lines are outdoors in Brooklyn, as is a stretch of the IRT New
Lots line. The photo was taken
along the F Line at the 4th
Ave. station in Brooklyn. This fairly short stretch
outdoors -- necessary for a massive bridge across the Gowanus Ship Canal -- was the
only permanent non-subway portion of the Independent System as it was
originally constructed. Later on the IND took over operation of
the BMT Culver line's long elevated stretch.
appearances, the G train is not running express, but rather is in the
process of switching directions for its return journey to Queens.
Two very different models of subway cars are in view.