At first I wanted to say you should have not cropped or framed so much of the top out, but then I see some ugly industrial buildings back there. Nice shot.
I dont normally place bridge engineering in the technology realm, however after careful consideration of the image, can see that the support structure really is something that is very outdated for train trestles. I give you points for the subject, but still find it less 'low tech' and more 'old design' Your focus is great, good DOF, bit distracting far background, but not so much that it would seems deductable. Nice use of the banks as a framing tool.
Good idea hear but the position of your shot was not well thought out. This picture has the potential of being a great shot but imo has several flaws. 1]. It’s to small. You need to use the maximum image allowed for more details. With DPC its 640 X. 2]. I would of tried to get in a position where as the white building behind was not in the picture. It is distracting. 3]. Focus is not sharp but the lighting is ok. Good try and I wish you the best of luck