D-d-d-double post. (disclaimer: all this feedback is of my own personal opinion on style and neatness)
Add something to this to show at long distances that there is wire, it is too thin to see far away. Also make the texture a tad smaller.
Floating saw, would be more fun if animated.
Baaaaad lighting on the bridge
And here
(honestly not sure if it is me, or the map. but should check)
make an actual roof on this, not just cover the top
Weird area-portal thin in blu spawn?
I feel like the cross-struts on this are a bit overdone, the density of detailing is relatively high compared to the rest of the area/facade. Either tone this down, or up the detail on the facade.
Use brush stairs, they look better.
Dark corner
Peeing tree (not really an issue, just funny)
It is painfully obvious that there isn't anything up there, and from some points, you can see that there really isn't any ground up there at all, which just (imo) looks weird. Suggestion is to add the displacement ground up there, add a few more trees, give it some depth.
This is a place where it is obvious that there isn't anything above the cliff (this is taken from the balcony over looking the bridge, red-spawn side)
Weird lighting on pipes
Alright, this is just an example of one area, but you have a lot of bare walls. Now, while I feel like that isn't bad, the lighting you have now doesn't really help make that area exciting. I personally think that a wall can remain bare, if the lighting and/or shadows on it are good.
And going back to lighting, I was mentioning this in chat with you, so you know a fix, but I just wanted to point out some area's that might be a problem...
http://dl.dropbox.com/u/8526839/pl_escarpment_b10002.jpg
http://dl.dropbox.com/u/8526839/pl_escarpment_b10004.jpg --- Light bleed here too
http://dl.dropbox.com/u/8526839/pl_escarpment_b10008.jpg
http://dl.dropbox.com/u/8526839/pl_escarpment_b10012.jpg
I do have HDR on. Hope this helps.