Of the 6 the first evening shot works best for me although I agree a little more traffic would help the light trails.
I'm slightly intrigued by your desciption of the f stop selection for you daylight images. f3.5 is wide open but most lenses are sharpest stopped down a bit and for movement I would select shutter priority, and a slow(ish) shutter speed, and let the camera sort out the f stop but adjusting iso if I needed to control DoF.
In this instance the only real DoF decision you need to make is whether the bridge rail should be in or out of focus. Wide open will put it out of focus as the first image shows.
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Nigel
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