Severn Railway Bridge (historical)
E898169
The Severn Railway Bridge was a historic railway bridge over the River Severn in Gloucestershire, England, that once carried trains between Sharpness and Lydney before its partial destruction and eventual demolition in the late 20th century.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Severn Bridge Railway (historical) | 1 |
| Severn Railway Bridge (historical) canonical | 1 |
| Severn Railway Bridge (site) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10985293 — 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: Severn Railway Bridge (historical) Context triple: [Gloucester and Berkeley Canal, crossesUnder, Severn Railway Bridge (historical)]
-
A.
Maidenhead Railway Bridge
Maidenhead Railway Bridge is a historic Brunel-designed railway bridge over the River Thames in England, renowned for its remarkably flat brick arches and elegant engineering.
-
B.
Blackfriars Railway Bridge
Blackfriars Railway Bridge is a historic railway bridge over the River Thames in central London, carrying train services into Blackfriars station and notable for its prominent position near the City of London.
-
C.
Bridgwater Town Bridge
Bridgwater Town Bridge is a historic road bridge spanning the River Parrett in Bridgwater, Somerset, England, serving as a key crossing and local landmark in the town.
-
D.
Stockport Viaduct
Stockport Viaduct is a large 19th-century brick railway viaduct in Stockport, England, notable for its many arches and its role in carrying the West Coast Main Line across the River Mersey.
-
E.
Kew Railway Bridge
Kew Railway Bridge is a historic iron railway bridge over the River Thames in London, carrying trains between Kew and Strand-on-the-Green.
- 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: Severn Railway Bridge (historical) Target entity description: The Severn Railway Bridge was a historic railway bridge over the River Severn in Gloucestershire, England, that once carried trains between Sharpness and Lydney before its partial destruction and eventual demolition in the late 20th century.
-
A.
Maidenhead Railway Bridge
Maidenhead Railway Bridge is a historic Brunel-designed railway bridge over the River Thames in England, renowned for its remarkably flat brick arches and elegant engineering.
-
B.
Blackfriars Railway Bridge
Blackfriars Railway Bridge is a historic railway bridge over the River Thames in central London, carrying train services into Blackfriars station and notable for its prominent position near the City of London.
-
C.
Bridgwater Town Bridge
Bridgwater Town Bridge is a historic road bridge spanning the River Parrett in Bridgwater, Somerset, England, serving as a key crossing and local landmark in the town.
-
D.
Stockport Viaduct
Stockport Viaduct is a large 19th-century brick railway viaduct in Stockport, England, notable for its many arches and its role in carrying the West Coast Main Line across the River Mersey.
-
E.
Kew Railway Bridge
Kew Railway Bridge is a historic iron railway bridge over the River Thames in London, carrying trains between Kew and Strand-on-the-Green.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
demolished bridge
ⓘ
railway bridge ⓘ |
| accident | 1960 tanker collision ⓘ |
| alsoKnownAs | Severn Bridge Railway bridge NERFINISHED ⓘ |
| builder | Contractors Marples and Sims NERFINISHED ⓘ |
| carried | single-track railway ⓘ |
| causeOfPartialDestruction | collision with oil tankers Arkendale H and Wastdale H ⓘ |
| closedToRailTraffic | 1960 ⓘ |
| connects |
Lydney
NERFINISHED
ⓘ
Sharpness NERFINISHED ⓘ |
| constructionStart | 1875 ⓘ |
| country | United Kingdom ⓘ |
| crosses | River Severn NERFINISHED ⓘ |
| demolished | 1970s ⓘ |
| demolitionCompleted | 1970 ⓘ |
| design | truss bridge ⓘ |
| engineeringSignificance | early large steel railway bridge over River Severn ⓘ |
| gauge | standard gauge ⓘ |
| hasRemains | bridge piers in River Severn ⓘ |
| heightAboveWater | approximately 70 feet ⓘ |
| historicalCounty | Gloucestershire NERFINISHED ⓘ |
| laterOwner |
British Railways
NERFINISHED
ⓘ
Great Western Railway NERFINISHED ⓘ |
| length | approximately 4,162 feet ⓘ |
| locatedIn |
England
ⓘ
Gloucestershire ⓘ |
| locatedNear |
Lydney Harbour
NERFINISHED
ⓘ
Sharpness Docks NERFINISHED ⓘ |
| material | steel ⓘ |
| nearbySettlement |
Awre
NERFINISHED
ⓘ
Purton NERFINISHED ⓘ |
| notableFor | major British railway bridge accident in 1960 ⓘ |
| numberOfSpans | 21 ⓘ |
| opened | 1879 ⓘ |
| openedToTraffic | January 1879 ⓘ |
| owner | Severn Bridge Railway Company NERFINISHED ⓘ |
| parliamentaryAuthorization | Severn Bridge Railway Act 1872 NERFINISHED ⓘ |
| partiallyDestroyed | 1960 ⓘ |
| partOf | Severn Bridge Railway NERFINISHED ⓘ |
| purpose | railway traffic ⓘ |
| railwayLine |
Midland Railway branch to Sharpness
NERFINISHED
ⓘ
Severn and Wye Railway NERFINISHED ⓘ |
| region |
southwest England
ⓘ
surface form:
South West England
|
| replacedBy | Severn Tunnel (as main rail route under Severn) NERFINISHED ⓘ |
| riverMouthProximity | near Severn Estuary ⓘ |
| status | demolished ⓘ |
| trafficType |
freight trains
ⓘ
passenger trains ⓘ |
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: Severn Railway Bridge (historical) Description of subject: The Severn Railway Bridge was a historic railway bridge over the River Severn in Gloucestershire, England, that once carried trains between Sharpness and Lydney before its partial destruction and eventual demolition in the late 20th century.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Severn Bridge Railway (historical)
this entity surface form:
Severn Railway Bridge (site)