Thelwall Viaduct
E30175
Thelwall Viaduct is a major motorway bridge in north-west England that carries the M6 over the River Mersey and surrounding waterways near Warrington.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Thelwall Viaduct canonical | 6 |
| Thelwall Viaduct (northbound carriageway) | 1 |
| Thelwall Viaduct (southbound carriageway) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T46573 — 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: Thelwall Viaduct Context triple: [Manchester Ship Canal, hasStructure, Thelwall Viaduct]
-
A.
Barton Swing Aqueduct
Barton Swing Aqueduct is a pioneering movable navigable aqueduct in Greater Manchester, England, that carries the Bridgewater Canal over the Manchester Ship Canal by swinging aside to allow large ships to pass.
-
B.
Barton Road Swing Bridge
Barton Road Swing Bridge is a movable road bridge in Greater Manchester, England, that swings to allow ships to pass along the Manchester Ship Canal.
-
C.
Adelphi Footbridge
Adelphi Footbridge is a pedestrian bridge spanning the River Irwell in Salford, England, providing a crossing between key areas of the city.
-
D.
Trinity Bridge
Trinity Bridge is a distinctive three-way footbridge in Greater Manchester, England, designed by architect Santiago Calatrava to link Salford and Manchester across the River Irwell.
-
E.
Wellington Bridge
Wellington Bridge is a roadway bridge in the Boston area that carries traffic across the Mystic River between Medford and Somerville, Massachusetts.
- 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: Thelwall Viaduct Target entity description: Thelwall Viaduct is a major motorway bridge in north-west England that carries the M6 over the River Mersey and surrounding waterways near Warrington.
-
A.
Barton Swing Aqueduct
Barton Swing Aqueduct is a pioneering movable navigable aqueduct in Greater Manchester, England, that carries the Bridgewater Canal over the Manchester Ship Canal by swinging aside to allow large ships to pass.
-
B.
Barton Road Swing Bridge
Barton Road Swing Bridge is a movable road bridge in Greater Manchester, England, that swings to allow ships to pass along the Manchester Ship Canal.
-
C.
Adelphi Footbridge
Adelphi Footbridge is a pedestrian bridge spanning the River Irwell in Salford, England, providing a crossing between key areas of the city.
-
D.
Trinity Bridge
Trinity Bridge is a distinctive three-way footbridge in Greater Manchester, England, designed by architect Santiago Calatrava to link Salford and Manchester across the River Irwell.
-
E.
Wellington Bridge
Wellington Bridge is a roadway bridge in the Boston area that carries traffic across the Mystic River between Medford and Somerville, Massachusetts.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
motorway bridge
ⓘ
road bridge ⓘ viaduct ⓘ |
| carries | M6 motorway ⓘ |
| constructionStart | 1959 ⓘ |
| country | United Kingdom ⓘ |
| crosses |
Manchester Ship Canal
ⓘ
River Mersey ⓘ |
| designedFor | long-distance motorway traffic ⓘ |
| hasAlternativeName | Thelwall Bridge ⓘ |
| hasIssue |
periodic structural maintenance requirements
ⓘ
susceptible to high winds ⓘ |
| hasLanes |
4 lanes northbound
ⓘ
4 lanes southbound ⓘ |
| hasSpeedLimit | 70 mph (national motorway speed limit), subject to variable restrictions ⓘ |
| hasToll | no ⓘ |
| length |
approximately 1.4 kilometres
ⓘ
approximately 4,500 feet ⓘ |
| locatedIn |
Warrington
ⓘ
surface form:
Borough of Warrington
Cheshire ⓘ England ⓘ |
| locatedInRegion | North West England ⓘ |
| locatedNear |
Lymm Interchange
ⓘ
M56 motorway ⓘ Thelwall ⓘ Warrington ⓘ |
| locatedOnRoute | between junction 20 and junction 21 of the M6 ⓘ |
| maintainedBy | National Highways ⓘ |
| material |
concrete
ⓘ
steel ⓘ |
| notableFor |
carrying one of the busiest motorway routes in the UK
ⓘ
frequent congestion and traffic delays ⓘ |
| numberOfCarriageways | 2 ⓘ |
| opened | 1963 ⓘ |
| parallelStructure |
Thelwall Viaduct
self-linksurface differs
ⓘ
surface form:
Thelwall Viaduct (northbound carriageway)
Thelwall Viaduct self-linksurface differs ⓘ
surface form:
Thelwall Viaduct (southbound carriageway)
|
| partOf | M6 motorway ⓘ |
| partOfNetwork |
Highways England
ⓘ
surface form:
Strategic Road Network of England
|
| passesOver |
Trans Pennine Trail
ⓘ
local roads near Thelwall ⓘ |
| roadTypeCarried | motorway ⓘ |
| spans |
River Mersey
ⓘ
surface form:
Mersey Valley
|
| trafficType | motor vehicles only ⓘ |
| usedBy |
cars
ⓘ
coaches ⓘ heavy goods 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: Thelwall Viaduct Description of subject: Thelwall Viaduct is a major motorway bridge in north-west England that carries the M6 over the River Mersey and surrounding waterways near Warrington.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Thelwall Viaduct (southbound carriageway)
this entity surface form:
Thelwall Viaduct (northbound carriageway)