First you see it. We thought this was a section of the new "Highline" trestle.
Now you don't. They either removed it or it became incorporated into the structure of the new Starbucks shop, but I could not find it.
UPDATE: Blog reader Bill R has sent us this picture and says that the Highline trestle really is still there. "It has just been cleverly masked to blend in by the Starbucks building, although stands separate and distinct." Thanks so much Bill, it sure had me fooled!
First you see it. View of yucky water accumulation adjacent the No. 4 Bridge from the West Side to Pleasure Island.