John F. McCarthy Memorial Bridge
E364885
The John F. McCarthy Memorial Bridge is a major toll bridge in the San Francisco Bay Area that carries Interstate 580 across San Francisco Bay between Richmond and San Rafael, California.
All labels observed (1)
| Label | Occurrences |
|---|---|
| John F. McCarthy Memorial Bridge canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1562383 — 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: John F. McCarthy Memorial Bridge Context triple: [Richmond–San Rafael Bridge, alsoKnownAs, John F. McCarthy Memorial Bridge]
-
A.
Maurice J. Tobin Memorial Bridge
The Maurice J. Tobin Memorial Bridge is a major steel cantilever bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
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B.
Lacey V. Murrow Memorial Bridge
The Lacey V. Murrow Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington, connecting Seattle to its eastern suburbs.
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C.
Homer M. Hadley Memorial Bridge
The Homer M. Hadley Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington between Seattle and Mercer Island.
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D.
Charles R. Fenwick Bridge
The Charles R. Fenwick Bridge is a major Potomac River crossing in the Washington, D.C. area that carries the Yellow Line of the Washington Metro between Virginia and the District of Columbia.
-
E.
Grenville Dodge Memorial Bridge
The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
- 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: John F. McCarthy Memorial Bridge Target entity description: The John F. McCarthy Memorial Bridge is a major toll bridge in the San Francisco Bay Area that carries Interstate 580 across San Francisco Bay between Richmond and San Rafael, California.
-
A.
Maurice J. Tobin Memorial Bridge
The Maurice J. Tobin Memorial Bridge is a major steel cantilever bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
-
B.
Lacey V. Murrow Memorial Bridge
The Lacey V. Murrow Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington, connecting Seattle to its eastern suburbs.
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C.
Homer M. Hadley Memorial Bridge
The Homer M. Hadley Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington between Seattle and Mercer Island.
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D.
Charles R. Fenwick Bridge
The Charles R. Fenwick Bridge is a major Potomac River crossing in the Washington, D.C. area that carries the Yellow Line of the Washington Metro between Virginia and the District of Columbia.
-
E.
Grenville Dodge Memorial Bridge
The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
bridge in California
ⓘ
cantilever bridge ⓘ highway bridge ⓘ steel bridge ⓘ toll bridge ⓘ |
| baySegment | northern part of San Francisco Bay ⓘ |
| carries | Interstate 580 ⓘ |
| connects |
Richmond, California
ⓘ
San Rafael, California ⓘ
linked to:
San Rafael
|
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses |
San Francisco Bay
ⓘ
San Pablo Bay sector of San Francisco Bay ⓘ
linked to:
San Francisco Bay
|
| design | cantilever and truss bridge ⓘ |
| function | connects North Bay and East Bay ⓘ |
| hasApproach |
Richmond approach
ⓘ
San Rafael approach ⓘ |
| hasFeature |
approach truss spans
ⓘ
long central cantilever span ⓘ |
| hasLanes |
3 lanes eastbound
ⓘ
3 lanes westbound ⓘ |
| hasToll | yes ⓘ |
| locatedIn |
Contra Costa County, California
ⓘ
linked to:
Contra Costa County
Marin County, California ⓘ
linked to:
Marin County
San Francisco Bay Area ⓘ |
| maintainedBy |
California Department of Transportation
ⓘ
linked to:
Caltrans
|
| nameAlso | Richmond–San Rafael Bridge ⓘ |
| namedAfter | John F. McCarthy ⓘ |
| opened | 1956 ⓘ |
| ownedBy |
State of California
ⓘ
linked to:
California, United States
|
| parallelTo |
San Francisco–Oakland Bay Bridge (as an alternate crossing of the Bay)
ⓘ
linked to:
San Francisco–Oakland Bay Bridge
|
| partOf |
I-580 corridor
ⓘ
linked to:
Interstate 580
Interstate Highway System ⓘ regional east–west route between Marin County and Contra Costa County ⓘ |
| regionServed |
San Francisco Bay Area transportation network
ⓘ
linked to:
San Francisco Bay Area transit network
|
| role | major regional toll crossing ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
| structureMaterial | steel ⓘ |
| tollCollectionDirection | westbound only ⓘ |
| tollSystem | electronic toll collection ⓘ |
| trafficType | motor vehicles ⓘ |
| usedFor |
commuter traffic
ⓘ
freight traffic ⓘ |
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: John F. McCarthy Memorial Bridge Description of subject: The John F. McCarthy Memorial Bridge is a major toll bridge in the San Francisco Bay Area that carries Interstate 580 across San Francisco Bay between Richmond and San Rafael, California.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.