Accident / Emergency Accident/Emergency ONLY - Use throughout the county. - 911 Brooks Memorial Hosptial - Located in Dunkirk - (716) 366-1111 Chautauqua County Sherriff - Non-Emergency Sherrif's Dept. Call 911 for all emergencies. - (716) 664-3100 (716) 672-5151 New York Thruway (I90) Road Conditions - Up to date road conditions for all of Interstate 90 - the New York Thruway. - www.thruway.state.ny.us - (800) THRUWAY