San Francisco-Oakland Bay Bridge
Table:
San Francisco–Oakland Bay Bridge

The western section of the San Francisco–Oakland Bay Bridge

Coordinates	37°49′5″N 122°20′48″W﻿ / ﻿37.81806°N 122.34667°W﻿ / 37.81806; -122.34667
Carries	10 lanes of I-80 throughout, and pedestrians and bicycles east of Yerba Buena Island (YBI)
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)[1]

Characteristics
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)[2]
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)
History
Designer	Charles H. Purcell
Construction start	July 8, 1933
Opened	November 12, 1936; 87 years ago (1936-11-12)
Statistics
Daily traffic	260,000[3][4]
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)

U.S. National Register of Historic Places

Designated	August 13, 2001
Reference no.	00000525[1][5]

Location

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Using the given table, state whether the hypothesis is entailed, neutral, or refuted. Provide the verdict inside {"answer": "YOUR ANSWER"} as JSON.

Assertion: The construction of the San Francisco–Oakland Bay Bridge took more than 3 years.

answer: entailed