This image sends a calm feeling through the viewer. The water, stable. The ripples, gentle. The sky light, smooth.
Just enough to reflect the light from the bridge, but at the same time, not enough to give it a clear reflection. Basically similar with the exposure: it's not overexposed, but it's not underexposed as well.
These are all down to the carefully selected camera settings: the 30 second shutter speed takes care of the reflections and the small, but not too small, F/9 aperture creates the rays we all love coming out streetlights.