I really like the close-up shot of the bridge. As for the rest, my advice would be to try and take the pictures with a tad more sunlight available. The background and structures seem to be "in the dark" too much. I'm no professional photographer by any means, but IMO that may help some.
To give an example, let's say you took these photos at 7:30 PM. Try taking the same shots at 7:00 PM and maybe 7:15, and then compare the natural lighting difference.
Just my $0.02
Posted via Mobile Device