Trigger Zones along Spline Mesh

[dlees9191]

Hi! I'm wondering if there's a way to automatically create a Trigger zone around or along a spline. I'm imagining generating a Mesh extrusion and using the Mesh Collider from that. But since the mesh would be concave, you can't set it to IsTrigger to true. 

I think that using primitive colliders along the mesh would be good enough to simulate it, but I'd like a way to auto-generate that.

Thanks!