I used a LED Lenser M14 torch to light up this image, particularly the foreground and right up to the legs of the bridge, really is an amazingly compact and powerful torch. Canon 5DIII 24-70II at 24mm f2.8 30sec 100ISO torch was used for approx 15-20 secs and 2 vehicles conveniently crossed the bridge, as well as planes and boats moved throughout the exposure.
Just after sundown while waiting for the moon to rise.