Second Severn Crossing
E531420
The Second Severn Crossing is a major cable-stayed motorway bridge linking England and Wales across the lower Severn Estuary, built to increase capacity and provide a more reliable alternative to the original Severn Bridge.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Second Severn Crossing canonical | 7 |
| Second Severn Crossing (historically tolled, tolls removed) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5507195 — 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: Second Severn Crossing Context triple: [Severn Estuary, crossedBy, Second Severn Crossing]
-
A.
Severn Bridge
Severn Bridge is a major suspension bridge in the United Kingdom that spans the River Severn and connects England with South Wales.
-
B.
Severn crossings
The Severn crossings are major road and rail bridges spanning the River Severn between England and Wales, serving as key transport links in the region.
-
C.
Menai Bridge
Menai Bridge is a small town on the Isle of Anglesey in Wales, best known for the historic suspension bridge that connects the island to the mainland across the Menai Strait.
-
D.
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.
-
E.
Kessock Bridge
Kessock Bridge is a prominent cable-stayed road bridge in the Scottish Highlands that spans the Beauly Firth, linking Inverness to the Black Isle.
- 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: Second Severn Crossing Target entity description: The Second Severn Crossing is a major cable-stayed motorway bridge linking England and Wales across the lower Severn Estuary, built to increase capacity and provide a more reliable alternative to the original Severn Bridge.
-
A.
Severn Bridge
Severn Bridge is a major suspension bridge in the United Kingdom that spans the River Severn and connects England with South Wales.
-
B.
Severn crossings
The Severn crossings are major road and rail bridges spanning the River Severn between England and Wales, serving as key transport links in the region.
-
C.
Menai Bridge
Menai Bridge is a small town on the Isle of Anglesey in Wales, best known for the historic suspension bridge that connects the island to the mainland across the Menai Strait.
-
D.
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.
-
E.
Kessock Bridge
Kessock Bridge is a prominent cable-stayed road bridge in the Scottish Highlands that spans the Beauly Firth, linking Inverness to the Black Isle.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
cable-stayed bridge
ⓘ
motorway bridge ⓘ road bridge ⓘ toll bridge ⓘ |
| alsoKnownAs | Prince of Wales Bridge NERFINISHED ⓘ |
| approachViaductMaterial | concrete ⓘ |
| carries | M4 motorway NERFINISHED ⓘ |
| connects |
England
NERFINISHED
ⓘ
Wales NERFINISHED ⓘ |
| constructionMethod | cable-stayed ⓘ |
| constructionStartDate | 1992 ⓘ |
| crosses |
River Severn
NERFINISHED
ⓘ
River Wye NERFINISHED ⓘ Severn Estuary NERFINISHED ⓘ |
| designer |
Halcrow Group
NERFINISHED
ⓘ
SETRA NERFINISHED ⓘ |
| hasPylonHeight | about 149 m ⓘ |
| hasTollPlazasFormerlyOn | westbound carriageway ⓘ |
| jurisdiction | United Kingdom ⓘ |
| length | about 5128 m ⓘ |
| locatedInBodyOfWater | lower Severn Estuary NERFINISHED ⓘ |
| locatedNear |
Magor
NERFINISHED
ⓘ
Severn Beach NERFINISHED ⓘ |
| locationCountry |
England
NERFINISHED
ⓘ
Wales NERFINISHED ⓘ |
| mainBridgeMaterial | steel ⓘ |
| mainSpanLength | about 456 m ⓘ |
| maintainedBy | National Highways ⓘ |
| namedAfter | Charles, Prince of Wales NERFINISHED ⓘ |
| numberOfLanes | 6 ⓘ |
| numberOfSpans | 37 ⓘ |
| officialName | Second Severn Crossing NERFINISHED ⓘ |
| opened | 1996-06-05 ⓘ |
| openedBy | Queen Elizabeth II NERFINISHED ⓘ |
| openedToTraffic | 1996 ⓘ |
| owner | UK Government NERFINISHED ⓘ |
| parallelTo | Severn Bridge NERFINISHED ⓘ |
| partOf | M4 corridor between London and South Wales ⓘ |
| partOfRoute | Trans-European Transport Network NERFINISHED ⓘ |
| purpose |
increase road capacity across Severn Estuary
ⓘ
provide more reliable alternative to Severn Bridge ⓘ |
| region |
South Wales
NERFINISHED
ⓘ
southwest England ⓘ
surface form:
South West England
|
| renamed | 2018 ⓘ |
| replacedInFunction | Severn Bridge NERFINISHED ⓘ |
| roadSurface | asphalt ⓘ |
| tollAbolishedOn | 2018-12-17 ⓘ |
| trafficType | motor vehicles ⓘ |
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: Second Severn Crossing Description of subject: The Second Severn Crossing is a major cable-stayed motorway bridge linking England and Wales across the lower Severn Estuary, built to increase capacity and provide a more reliable alternative to the original Severn Bridge.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
M4 motorway
subject surface form:
M4 motorway
this entity surface form:
Second Severn Crossing (historically tolled, tolls removed)