Wood slats on a curve - w radius and end behaviour

Hi Guys,
I don’t think that an array command will work here

I’ve done my best to provide a snip of what’s at work.

My arc is part of a bigger circle - that circle has a cross of pathways running through.

The bench needs to be flush with the limit of the pathway? (the pink wedge shows my limits)
I might try to build the wood slat with a guide and use that to copy multiple (the middle quasi bench is the vendors so Im building a tool there)
Sorry if this is confusing