Don't blame the Scouts, if anything they help your case. In order for such a project to be approved by the BSA, the Scouts have to present the project for approval. This means that problems had been around long enough for them to notice that this work needed to be done, and brought it to the attention of the organization that owns it, as well as their scouting organization. Since the organization knew there were these problems but did not temporarily close the playground or take other temporary steps, the owner is liable. More than just medical expenses, pain, suffering and scarring if any.
Answered on May 20th, 2013 at 10:05 PM