NOTE: This is a template for the Operations and Maintenance Agreement that property owners will eventually be required to execute. This information will be used to develop a new trail maintenance contract.Trail Maintenance on Timberline ATV Trail. Allegheny County owns and maintains: • 557 Bridges. • 408 miles of Roads. FORM 1304.1 Housing Court Agreement to Mediate. Renewal also contracts with State and Federal prisons for alternative work release and drug and alcohol treatment programs. • Fleet of 720 maintenance, administrative, and police vehicles. Allegheny. Allegheny County Assistance Office Headquarters Piatt Place 301 Fifth Avenue, Suite 470. Pittsburgh, PA 15222.