Went out today, to ride the trail so I would know where to go when I decide to take it to work. I got all of about 3 miles into it, when I ran into a closed section due to construction. They were replacing a large section of concrete, and blocking the path as well. I probably could have found a way around, but the point was to ride the trail so I'd know it before using it to get to work.
I know I've seen it in the past, but I can't remember what the website is that lists such things?
edit: I might be mistaken, it might be the High Line Canal trail, not sure.