Bay Bridge
E36948
The Bay Bridge is a major suspension bridge complex in the San Francisco Bay Area that connects San Francisco and Oakland across San Francisco Bay.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Bay Bridge canonical | 31 |
| Bay Bridge Series | 1 |
| Bay Bridge approaches | 1 |
| Bay Bridge eastern and western spans connection | 1 |
| Bay Bridge rail deck | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T138269 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Bay Bridge Context triple: [Coit Tower, hasViewOf, Bay Bridge]
-
A.
St. Johns Bridge
St. Johns Bridge is a historic steel suspension bridge in Portland, Oregon, noted for its striking Gothic-style towers and scenic span over the Willamette River.
-
B.
Long Bridge
Long Bridge is a major railroad bridge over the Potomac River in Washington, D.C., carrying freight and passenger trains between the District of Columbia and Virginia.
-
C.
Key Bridge
Key Bridge is a historic steel-arch bridge spanning the Potomac River, connecting Washington, D.C. to Arlington, Virginia.
-
D.
Memorial Bridge
Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
-
E.
Trinity Bridge
Trinity Bridge is a distinctive three-way footbridge in Greater Manchester, England, designed by architect Santiago Calatrava to link Salford and Manchester across the River Irwell.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Bay Bridge Target entity description: The Bay Bridge is a major suspension bridge complex in the San Francisco Bay Area that connects San Francisco and Oakland across San Francisco Bay.
-
A.
St. Johns Bridge
St. Johns Bridge is a historic steel suspension bridge in Portland, Oregon, noted for its striking Gothic-style towers and scenic span over the Willamette River.
-
B.
Long Bridge
Long Bridge is a major railroad bridge over the Potomac River in Washington, D.C., carrying freight and passenger trains between the District of Columbia and Virginia.
-
C.
Key Bridge
Key Bridge is a historic steel-arch bridge spanning the Potomac River, connecting Washington, D.C. to Arlington, Virginia.
-
D.
Memorial Bridge
Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
-
E.
Trinity Bridge
Trinity Bridge is a distinctive three-way footbridge in Greater Manchester, England, designed by architect Santiago Calatrava to link Salford and Manchester across the River Irwell.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
bridge complex
ⓘ
suspension bridge ⓘ toll bridge ⓘ |
| affectedBy | 1989 Loma Prieta earthquake ⓘ |
| carries | motor vehicle traffic ⓘ |
| connects |
Oakland
ⓘ
San Francisco ⓘ |
| constructionStart | 1933 ⓘ |
| crosses |
San Francisco Bay
ⓘ
Yerba Buena Island ⓘ |
| damageEvent | collapse of a section of the original eastern span in 1989 ⓘ |
| design |
self-anchored suspension bridge (new eastern span)
ⓘ
suspension bridge (western span) ⓘ |
| easternSpanReplacementCompletion | 2013 ⓘ |
| easternSpanReplacementOpening | September 2013 ⓘ |
| hasComponent |
Yerba Buena Tunnel
ⓘ
eastern span ⓘ western span ⓘ |
| hasLaneCount | multiple lanes in each direction ⓘ |
| isIconicStructureOf | San Francisco Bay Area ⓘ |
| isMajorRouteBetween | San Francisco and East Bay ⓘ |
| length |
approximately 4.46 miles
ⓘ
approximately 7.18 km ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
San Francisco Bay Area ⓘ United States of America ⓘ
surface form:
United States
|
| lowerDeckDirection | eastbound (current configuration) ⓘ |
| maintainedBy |
Caltrans
ⓘ
surface form:
California Department of Transportation
|
| namedAfter |
Oakland
ⓘ
San Francisco ⓘ |
| officialName | San Francisco–Oakland Bay Bridge ⓘ |
| opened | 1936 ⓘ |
| openedBy |
President Franklin D. Roosevelt
ⓘ
surface form:
President Franklin D. Roosevelt (via telegraph signal)
|
| openedToTraffic | November 12, 1936 ⓘ |
| owner |
California, United States
ⓘ
surface form:
State of California
|
| parallelTo |
San Francisco Bay Ferry
ⓘ
surface form:
San Francisco–Oakland ferry routes
|
| partOf | Interstate 80 ⓘ |
| passesThrough | Yerba Buena Island ⓘ |
| previousTollCollection | cash tolls ⓘ |
| regionServed | San Francisco Bay Area ⓘ |
| replaced | original eastern span of the Bay Bridge ⓘ |
| shortName | Bay Bridge self-link ⓘ |
| tollCollection | electronic tolling ⓘ |
| tollDirection | westbound ⓘ |
| trafficType |
automobiles
ⓘ
trucks ⓘ |
| upperDeckDirection | westbound (current configuration) ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Bay Bridge Description of subject: The Bay Bridge is a major suspension bridge complex in the San Francisco Bay Area that connects San Francisco and Oakland across San Francisco Bay.
Referenced by (35)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Bay Bridge Series
this entity surface form:
Bay Bridge eastern and western spans connection
this entity surface form:
Bay Bridge rail deck
this entity surface form:
Bay Bridge approaches