Great pp, would love to read your steps, the textures all look great and the composition is swell, love the way the sun is peeking through the bars there.
A little better lighting control reducing the highlights would have been a plus. Not an overly interesting image from an artistic sense, it does provide a lot of detail and color differences. A little more thought into the composition would have made for a better image. A good entry into the challenge, it falls just short of being truly effective. Perhaps a little change in viewing angle would have helped.
Nice light this time of day. Hopefully this trestle isn't used frequently - I'd hate to be where you were if a train decided to happen by - doesn't look as though there's anywhere to go!