A roof collapse in Princeton sent one man to the hospital Wednesday morning. The accident happened a little after seven at the Menards Home Store thats currently under construction on Princetons west side. An approximately 4000 square foot section of the roof collapsed, injuring one man. Mike Folsom of Mt. Carmel, Illinois was taken to Deaconess Hospital. Officials dont know why the roof collapsed yet. For now, all work is on hold while structural engineers try to figure out the problem.