Ok so I was going around the map just seeing if I could spot some bugs to help with feedback! Its very well done and I could not find any but this one. So, in A, the girders were removed for a reason. And this helps alot! But buy simply going on the roof of the building in A (I forget callout) you can go to the side of it and crouch jump on top of the light. Once on the light walk backwards very slitley and then crouch jump forward and that will bring you into the other side. Im almost certain this was un intended because that makes getting rid of the girders make no sense other then to slow people down from doing this. My suggestion is to take the light out, move it higher, or to invisable wall it (Invisable wall should be last resort)
Thanks for reading hope its fixed!