Specifications include, but are not limited to: The Department of Natural Resources (DNR) requires the replacement of the roofing system on the maintenance building located at, Big River State Park, Henderson County, Illinois. Work will include: The maintenance building, located at 1337 TWP Rd. 2850 N, Keithsburg, Illinois, is a 30’x80’ steel construction Building constructed in the 1970’s, with a low pitch steel roof. The existing roof consists of steel panels attached to steel roof purlins and has outlived its useful service life. Work will include the complete removal of the existing roof panels, flashing, and vents from the roof. The roof will receive new roofing material consisting of re-flashing any roof penetrations, new flashing and edge protection, and new Butler Rib 26-gauge galvalume roof panels.