Stock Photo: San Francisco-Oakland Bay Bridge. ca. 1937, San Francisco, California, USA, VIEW FROM SAN FRANCISCO-OAKLAND BAY BRIDGE TOWER TOWARD SAN FRANCISCO, CALIF. The length of the longest span is 2310 feet, and the highest tower is 519 above the water of the Bay. Total length of Bridge is 8 1/2 miles, 4 1/2 miles of this is over water. The total length of the suspender ropes is 43 miles, and the total length of the wire used in the cables, is 70,815 miles.