Great concept for a shot. I would suggest you went for perfect symmetry as far as the structure allows, by cropping a little off the bottom to match the top. I also think the two bars on either side detract from the overall effect and would crop those as well.
As the sky is rather grey, you might consider converting this to B&W, or even creating a high-key effect using a threshold.
'Powerful' line shot... ;-DDDD!!! Excellent symmetry, great composition... although I'm not too sure about the two lines on the side... they sort of close the whole image in... and I don't think that that effect helps... I would be tempted to crop here... Good tones, super perspective... well done!!