Britannia Bridge
E222612
Britannia Bridge is a historic road and former rail bridge in Wales that spans the Menai Strait, connecting the island of Anglesey to the mainland.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Britannia Bridge canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1975264 — 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: Britannia Bridge Context triple: [Anglesey, hasBridge, Britannia Bridge]
-
A.
Alexandra Bridge
The Alexandra Bridge is a historic steel truss bridge spanning the Ottawa River, linking the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
-
B.
Tay Rail Bridge
The Tay Rail Bridge is a historic railway bridge in Scotland that carries trains across the Firth of Tay between Dundee and the county of Fife.
-
C.
Forth Bridge
The Forth Bridge is a historic cantilever railway bridge in Scotland, renowned as an iconic feat of Victorian engineering and a UNESCO World Heritage Site.
-
D.
Carron Bridge
Carron Bridge is a historic crossing spanning the River Carron in Scotland, serving as a local transport link and notable landmark in the surrounding area.
-
E.
Spean Bridge
Spean Bridge is a village in the Lochaber area of the Scottish Highlands, known as a key junction for road and rail routes and for its proximity to the Commando Memorial.
- 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: Britannia Bridge Target entity description: Britannia Bridge is a historic road and former rail bridge in Wales that spans the Menai Strait, connecting the island of Anglesey to the mainland.
-
A.
Alexandra Bridge
The Alexandra Bridge is a historic steel truss bridge spanning the Ottawa River, linking the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
-
B.
Tay Rail Bridge
The Tay Rail Bridge is a historic railway bridge in Scotland that carries trains across the Firth of Tay between Dundee and the county of Fife.
-
C.
Forth Bridge
The Forth Bridge is a historic cantilever railway bridge in Scotland, renowned as an iconic feat of Victorian engineering and a UNESCO World Heritage Site.
-
D.
Carron Bridge
Carron Bridge is a historic crossing spanning the River Carron in Scotland, serving as a local transport link and notable landmark in the surrounding area.
-
E.
Spean Bridge
Spean Bridge is a village in the Lochaber area of the Scottish Highlands, known as a key junction for road and rail routes and for its proximity to the Commando Memorial.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
box girder bridge
ⓘ
bridge ⓘ historic structure ⓘ |
| architecturalStyle | Victorian engineering ⓘ |
| carries | road traffic ⓘ |
| connects |
Anglesey
ⓘ
Island of Anglesey to mainland Wales ⓘ mainland Wales ⓘ |
| constructionStart | 1846 ⓘ |
| country | United Kingdom ⓘ |
| crosses | Menai Strait ⓘ |
| crossesBetween |
Bangor, Gwynedd and Llanfairpwllgwyngyll, Anglesey
ⓘ
linked to:
Bangor
|
| damagedBy | fire in May 1970 ⓘ |
| designer | Robert Stephenson ⓘ |
| engineer | Robert Stephenson ⓘ |
| formerlyCarried | rail traffic ⓘ |
| hasFeature | stone lions at eastern and western ends ⓘ |
| hasLevel |
lower rail deck (originally)
ⓘ
upper road deck ⓘ |
| hasNumberOfMainSpans | 3 ⓘ |
| hasPiersOn | Britannia Rock ⓘ |
| heritageStatus | listed structure (parts) ⓘ |
| locatedIn | Wales ⓘ |
| maintainedBy | North and Mid Wales Trunk Road Agent ⓘ |
| material |
concrete (reconstructed piers and approaches)
ⓘ
steel (reconstructed structure) ⓘ wrought iron (original structure) ⓘ |
| namedAfter | Britannia Rock ⓘ |
| near |
City of Bangor
ⓘ
linked to:
Bangor
Menai Bridge (town) ⓘ |
| opened | 1850 ⓘ |
| originalDesign | tubular bridge ⓘ |
| owner |
UK government (via relevant transport authorities)
ⓘ
linked to:
Department for Transport
|
| parallelTo |
Menai Suspension Bridge
ⓘ
linked to:
Menai Bridge
|
| partOf | A55 road NERFINISHED ⓘ |
| purpose | to carry traffic across the Menai Strait ⓘ |
| railLineCarried | North Wales Coast Line ⓘ |
| railReopened | 1972 ⓘ |
| railwayServed |
Chester and Holyhead Railway
ⓘ
linked to:
North Wales Coast Line
|
| reconstructedAs | two-tier steel box girder bridge ⓘ |
| reconstructionStart | early 1970s ⓘ |
| region |
Gwynedd
ⓘ
Isle of Anglesey ⓘ
linked to:
Anglesey
|
| roadReopened | 1980 ⓘ |
| significance | key transport link between Anglesey and mainland Wales ⓘ |
| status | in use ⓘ |
| sufferedEvent | fire of 1970 ⓘ |
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: Britannia Bridge Description of subject: Britannia Bridge is a historic road and former rail bridge in Wales that spans the Menai Strait, connecting the island of Anglesey to the mainland.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.