Dyfi Bridge
E483977
Dyfi Bridge is a historic stone road bridge in Wales that carries traffic across the River Dyfi near Machynlleth.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Dyfi Bridge canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4628550 — 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: Dyfi Bridge Context triple: [River Dyfi, hasBridge, Dyfi Bridge]
-
A.
Barmouth Bridge
Barmouth Bridge is a historic wooden viaduct carrying the railway across the Mawddach Estuary near Barmouth in Gwynedd, Wales.
-
B.
Llanelltyd Bridge
Llanelltyd Bridge is a historic stone arch bridge in Gwynedd, Wales, carrying the A496 road across the River Mawddach near the village of Llanelltyd.
-
C.
Chepstow Bridge
Chepstow Bridge is a historic cast-iron road bridge spanning the River Wye between Chepstow in Wales and Gloucestershire in England.
-
D.
Conwy Suspension Bridge
Conwy Suspension Bridge is a historic 19th-century suspension bridge in Conwy, Wales, notable for its picturesque setting beside Conwy Castle and its early iron-chain engineering.
-
E.
Briton Ferry Bridge
Briton Ferry Bridge is a historic road bridge in South Wales that spans the River Neath, linking the town of Briton Ferry with Neath and the wider Neath Port Talbot area.
- 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: Dyfi Bridge Target entity description: Dyfi Bridge is a historic stone road bridge in Wales that carries traffic across the River Dyfi near Machynlleth.
-
A.
Barmouth Bridge
Barmouth Bridge is a historic wooden viaduct carrying the railway across the Mawddach Estuary near Barmouth in Gwynedd, Wales.
-
B.
Llanelltyd Bridge
Llanelltyd Bridge is a historic stone arch bridge in Gwynedd, Wales, carrying the A496 road across the River Mawddach near the village of Llanelltyd.
-
C.
Chepstow Bridge
Chepstow Bridge is a historic cast-iron road bridge spanning the River Wye between Chepstow in Wales and Gloucestershire in England.
-
D.
Conwy Suspension Bridge
Conwy Suspension Bridge is a historic 19th-century suspension bridge in Conwy, Wales, notable for its picturesque setting beside Conwy Castle and its early iron-chain engineering.
-
E.
Briton Ferry Bridge
Briton Ferry Bridge is a historic road bridge in South Wales that spans the River Neath, linking the town of Briton Ferry with Neath and the wider Neath Port Talbot area.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
listed building
ⓘ
road bridge ⓘ stone arch bridge ⓘ |
| carries | A487 road ⓘ |
| connects |
Gwynedd
ⓘ
Powys ⓘ |
| country | Wales ⓘ |
| crosses | River Dyfi ⓘ |
| crossesAt |
Dyfi valley
ⓘ
linked to:
Dyfi Valley
|
| hasAlternativeName | Pont Dyfi ⓘ |
| hasApproachRoad |
A487 south of Machynlleth
ⓘ
A487 towards Dolgellau ⓘ |
| hasApproximateLength | over 100 metres ⓘ |
| hasConstructionType | masonry arch ⓘ |
| hasFunction |
pedestrian traffic
ⓘ
vehicular traffic ⓘ |
| hasIssue |
flood risk
ⓘ
traffic bottleneck ⓘ |
| hasNumberOfArches | 5 ⓘ |
| hasParapets | stone parapets ⓘ |
| hasRoadWidth | single carriageway ⓘ |
| hasScenicSetting | rural landscape ⓘ |
| hasStructuralForm | multi-span arch ⓘ |
| heritageDesignationBy | Cadw ⓘ |
| heritageStatus | Grade II* listed building ⓘ |
| isHistoric | true ⓘ |
| isOnRoute | coastal route between Mid and North Wales ⓘ |
| languageOfAlternativeName | Welsh ⓘ |
| locatedIn |
Dyfi Biosphere area
ⓘ
linked to:
Dyfi Biosphere partnership
Powys ⓘ |
| locatedNear |
Corris
ⓘ
Derwenlas ⓘ Machynlleth ⓘ |
| maintainedBy | Welsh Government ⓘ |
| material | stone ⓘ |
| nearBorderOf | Ceredigion ⓘ |
| opened | early 19th century ⓘ |
| region | Mid Wales ⓘ |
| replaced | earlier timber bridge ⓘ |
| roadTypeCarried | trunk road ⓘ |
| subjectOf | Dyfi Bridge replacement scheme ⓘ |
| usedBy |
local traffic
ⓘ
through 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: Dyfi Bridge Description of subject: Dyfi Bridge is a historic stone road bridge in Wales that carries traffic across the River Dyfi near Machynlleth.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.