Base on top of Bridge in Castle

I seen this the other day and have no idea how the engineer got up there.  I'm referring to the bridge inside the actual castle.  Its basically right above you when you go in from the middle through the trench.

Anyone have any ideas or even a video?  I'm just curious

Just jump down from the castle wall. You'll see a big hill to the left when you exit the castle, use it to get up there.

What Octon said. Its obvious once you figure it out and then you'll smack yourself.

I'll have to try that then.  I know you can get up the side of the wall on the far right just didn't know you could walk along it

Thanks!

Ok so I tried that and its impossible to get over to that bridge from the top of that wall.  There are several "levels" within castle so maybe you are thinking of another spot.  I am referring to the bridge/catwalk inside the castle.  Basically on the 1 level if you are on offensive and exit the respawn and go to the far right you will head towards the castle up the big hill and onto the castle wall.  If you look to the far left you can see the bridge.  I tried everything but can not get on top of the "pillars" to then jump all the way over.  I even tried on the other side of the wall but it doesn't seem possible.

Is any of this making sense? lol

Get a screenshot

Well I cant figure out how to embed an image into the reply so here is a link:

Screenshot

So nobody knows!?!?  I thought this was the elite group of TF2

Meh, its never worth it to go up there. We are very elite because we dont do it

I just went and tried it, and you need to jump to the second little ledge on the wall not just the first one.  It's not really that great of a spot though, maybe for another class though.