The Unused Staircase

There is a staircase down to the train tracks
Not a station -
  Just the tracks.
It's miles from a station.

There are no sidewalks
  and nothing on the other side of the tracks -
  just a fence and the freeway.

Probably no one ever uses
  those charming metal stairs
  bright and quaint
  on a rocky hill
  with a lush green park at the top.

If the train would stop here
  I would climb them and explore
But the train never stops here

Who was the last person to use those stairs?
Who will use them next? Will anyone?
Why were they built -
  those bright quaint stairs?

Long may they endure
  speaking silently
    of imaginary adventures
      that shall never be