Gym Flooring

I don’t remember the name of the book or the author but the cover of it is really unique. It’s a hardwood floor. Like a gym floor. It’s about a kid in high school and all these kids in his town are commiting ******* at this river. At the scene of every ******* there is always a different statue built from wood. Has a lot of carpentry and ******* themes. Teen agnst kind of thing. Anyone know the name of this book or the author?