This is the train tressle next to the Dumbarton Bridge. I've never seen a train on this tressle though it is always open for business.

I used a Canon 20mm prime lens and hand-held a ND graduation filter over the front of the lens (GRAY/CLEAR). I am awaiting a new 17-40mm F4 L lens to compare with an older 17-35 F2.8L that I would have used typically in this location but didn't have it in the bag at the time of this shot.