For being your first map for TTT it's surprisingly good.
Plenty of spawns, a fair amount of weapons and ammo. While navigating around the map I didn't notice any significant FPS drops. Sad to say, what struck me as the most surprising was how well the ladders worked.
Typically you'll be on a map where to get off a ladder you have to constantly jump and crouch, only to end up accidentally flinging yourself off of it. With your ladders there is no fighting, you end up exactly where you intend to go.
The design and layout are rather basic, but it works very well. From almost anywhere on the map you can at least see or be able to tell where you're getting shot from, or get a nice angle to shoot someone.
Really the only thing I'd recommend is a change to one of the Traitor traps you had added. There's a trap that destroys a small portion of the bridge after 5 seconds, perhaps change that to half the bridge or the entire bridge. Limiting access and exit from that central tower. It would also be nice if a similar trap were added to the other bridge, forcing people to enter and leave from those four side bridges. Just a thought I had, would have to see how it plays out in-game though.