Grafton Bridge (rail‑road bridge over Clarence River)
E249693
Grafton Bridge is a historic combined road and rail bridge spanning the Clarence River in Grafton, New South Wales, Australia.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Grafton Bridge (rail‑road bridge over Clarence River) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2281500 — 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: Grafton Bridge (rail‑road bridge over Clarence River) Context triple: [North Coast railway line, hasBridge, Grafton Bridge (rail‑road bridge over Clarence River)]
-
A.
Perth Bridge
Perth Bridge is a historic stone road bridge spanning the River Tay in Perth, Scotland, known for its multiple arches and 18th-century construction.
-
B.
Swan Street Bridge
Swan Street Bridge is a prominent road bridge in Melbourne, Australia, carrying traffic over the Yarra River near the Melbourne Cricket Ground and other key sporting precincts.
-
C.
Strawberry Creek bridge
Strawberry Creek bridge is a pedestrian bridge on the UC Berkeley campus that spans Strawberry Creek near Sather Gate, serving as a key walkway between central campus areas.
-
D.
Wellington Bridge
Wellington Bridge is a roadway bridge in the Boston area that carries traffic across the Mystic River between Medford and Somerville, Massachusetts.
-
E.
Hawthorne Bridge
Hawthorne Bridge is a historic truss bridge in Portland, Oregon, known as one of the city’s oldest and most heavily used river crossings.
- 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: Grafton Bridge (rail‑road bridge over Clarence River) Target entity description: Grafton Bridge is a historic combined road and rail bridge spanning the Clarence River in Grafton, New South Wales, Australia.
-
A.
Perth Bridge
Perth Bridge is a historic stone road bridge spanning the River Tay in Perth, Scotland, known for its multiple arches and 18th-century construction.
-
B.
Swan Street Bridge
Swan Street Bridge is a prominent road bridge in Melbourne, Australia, carrying traffic over the Yarra River near the Melbourne Cricket Ground and other key sporting precincts.
-
C.
Strawberry Creek bridge
Strawberry Creek bridge is a pedestrian bridge on the UC Berkeley campus that spans Strawberry Creek near Sather Gate, serving as a key walkway between central campus areas.
-
D.
Wellington Bridge
Wellington Bridge is a roadway bridge in the Boston area that carries traffic across the Mystic River between Medford and Somerville, Massachusetts.
-
E.
Hawthorne Bridge
Hawthorne Bridge is a historic truss bridge in Portland, Oregon, known as one of the city’s oldest and most heavily used river crossings.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
bascule bridge
ⓘ
heritage-listed bridge ⓘ road-rail bridge ⓘ truss bridge ⓘ |
| alsoKnownAs |
Grafton Bridge
ⓘ
Grafton rail and road bridge ⓘ
linked to:
Grafton Bridge
|
| carries |
North Coast railway line
ⓘ
pedestrian traffic ⓘ road traffic ⓘ |
| constructionStart | 1927 ⓘ |
| country | Australia ⓘ |
| crosses | Clarence River ⓘ |
| crossesBetween |
Grafton
ⓘ
South Grafton ⓘ |
| design | through truss ⓘ |
| engineer |
New South Wales Department of Public Works (design)
ⓘ
linked to:
New South Wales Public Works Department
|
| hasComponent | bascule span ⓘ |
| hasLevel |
lower rail deck
ⓘ
upper road deck ⓘ |
| heritageListingDate | 2 April 1999 ⓘ |
| heritageRegister | New South Wales State Heritage Register ⓘ |
| historicalSignificance | important example of early 20th-century steel truss road-rail bridge in New South Wales ⓘ |
| length | approximately 1,008 metres ⓘ |
| locatedIn | Grafton, New South Wales ⓘ |
| maintainedBy | Transport for NSW ⓘ |
| material | steel ⓘ |
| numberOfSpans | 7 ⓘ |
| opened | 1932 ⓘ |
| openingDate | 19 July 1932 ⓘ |
| owner | Transport for NSW ⓘ |
| purpose | to provide combined rail and road crossing of the Clarence River ⓘ |
| railLine |
North Coast line between Sydney and Brisbane
ⓘ
linked to:
North Coast railway line
|
| replacedBy | new Grafton Bridge (road bridge) for most road traffic ⓘ |
| state | New South Wales ⓘ |
| trafficType | two-way road traffic (originally) ⓘ |
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: Grafton Bridge (rail‑road bridge over Clarence River) Description of subject: Grafton Bridge is a historic combined road and rail bridge spanning the Clarence River in Grafton, New South Wales, Australia.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.