Help! Stuck in penmubra requiem

[Guest]

Spoiler below!

I guess I could have mentioned that it's the other side of the bridge you can reach the platform. Use the air vents to jump to the other side. Oh, and I'd take some ketchup with me, it loves some weak chains served on platforms

Spoiler below!

I'm not sure I follow now. There's no way I can get to the other side, and I am on the side where you can get the ketchup. Due to the chainlink fences on the other side I'm not able to jump.