San Francisco–Oakland Bay Bridge
Coordinates | 37°49′5″N 122°20′48″W﻿ / ﻿37.81806°N 122.34667°W﻿ / 37.81806; -122.34667 Coordinates: 37°49′5″N 122°20′48″W﻿ / ﻿37.81806°N 122.34667°W﻿ / 37.81806; -122.34667
Crosses | San Francisco Bay via YBI
Locale | San Francisco and Oakland, California, United States
Owner | State of California
Maintained by | California Department of Transportation and the Bay Area Toll Authority
ID number | 34 0003 (West) 34 0004 (YBI Tunnel) 33 0025 (East)
Design | Double-decked suspension spans (two, connected by center anchorage), tunnel, cast-in-place concrete transition span, self-anchored suspension span, precast segmental concrete viaduct
Material | Steel, concrete
Total length | West: 10,304 ft (3,141 m) East span: 10,176 ft (3,102 m) Total: 4.46 miles (7.18 km) excluding approaches
Width | West: 5 traffic lanes totaling 57.5 ft (17.5 m) East: 10 traffic lanes totaling 258.33 ft (78.74 m)
Height | West: 526 ft (160 m)
Longest span | West: two main spans 2,310 ft (704 m) East: one main span 1,400 ft (430 m)
Clearance above | Westbound: 14 feet (4.3 m), with additional clearance in some lanes Eastbound: 14.67 feet (4.47 m)
Clearance below | West: 220 feet (67 m) East: 136 feet (41 m)
Designer | Charles H. Purcell
Construction start | July 8, 1933
Opened | November 12, 1936; 82 years ago (1936-11-12)
Daily traffic | 260,000
Toll | Cars (east span, westbound only) $7.00 (rush hours) $2.50 (carpool rush hours) $5.00 (weekday non-rush hours) $6.00 (weekend all day)