A nice shot with good lighting on the tracks. I think the biggest reason it came in almost a dead 5 was that it is a subject and a view that has been done many times before, and this one was good, but not really different from the rest of them. I had a similar outtake that I really liked for the "sepia" challenge, but I decided it was an overdone subject.
On the other hand, many challenges are won by people duplicating being inspired by previous winners, so what do I know?
If you are going to produce a landscape then absolutely everything from the first pebble at your feet to the last tree on the horizon needs to be in focus. In this image we don't get sharp until 6/8 feet from the foreground, and thats a shame. Use f22 and focus on something 3 feet out, that way the hyperfocal point will ensure you have the maximum depth of field.
This image has a strong foreground element but you waste it by making it out of focus. It then needs something in the distance to lead the eye to.