Merged into the Nassau Electric Railroad. Unified into the New York City Transit System. The structure at 9th Avenue is open cut, having rambled through a short rock and brick-lined 2 track tunnel upon exiting from the 4th Avenue subway. Both levels of 9th Ave have 2 island platforms and one express track down the middle. The West End Line then becomes elevated between 9th Ave and Bay 50th St, using an El structure typically built during the Dual Contracts days.
All local stops are side platforms and all express stops are of the island platform type.
62nd Street allows a direct transfer to the Sea Beach Line, which runs in an open cut below. Then the line crosses Coney Island Creek and rises again before entering Stillwell Avenue, the terminal station. More information about Stillwell Avenue Station available on its own page . The elevated West End Line is one of the finest elevated runs in the city. The stations have enough of a distance where decent speed can be attained before stopping at the next one.