Urban photography on the run - illuminated railway tracks in the evening

Recently, I went to a shopping center in my neighborhood (Warsaw, Poland). It was evening, and I was walking across a footbridge over the railroad tracks when a set of interesting colors caught my attention. The railroad tracks were illuminated by streetlights and contrasted sharply with the dark sky, which was not yet black, but rather navy blue, as the sun had just set. What do you think of the mood of this urban photograph?