The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the opening of the San Francisco Bay. Its total length is 1.7 miles (8,981 feet or 2,737 m). It is built at a height (average) of 220 feet (67 m) above water. It connects the city of San Francisco on the northern tip of the San Francisco Peninsula to Marin County.The construction work of the Golden Gate Bridge began on January 5, 1933. On May 27, 1937, the bridge was opened to pedestrians and to automobiles on the next day.