Help disabling collision geometry

[learnedcock]

I'm working on a house mod that uses the Whiterun drawbridge asset, with a moat underneath the bridge. I'm using playgamebroanim to raise/lower the drawbridge. The problem I've been having is that, when it's in the upright position, actors can just walk on air where the bridge is when lowered. I

 

I'm assuming that what's causing this is either (1) actors see the navmesh over the bridge or (2) the animation is cosmetic and doesn't change the collision geometry. I think that the latter is more likely, since I'm still colliding with the empty space where the chains would be. The obvious solution seems to be just disabling the drawbridge's collision geometry when it's in its raised state and then enabling a collision cube over the upright bridge.

 

Does anyone know whether there is a way to disable an object's collision geometry without disabling the appearance that the object is still there? I've been unable to find anything like this in the CK wiki. I'm also open to other solutions too.

 

Thanks!