Lethbridge Viaduct
E429412
The Lethbridge Viaduct, also known as the High Level Bridge, is a historic steel railway trestle in Lethbridge, Alberta, and one of the longest and highest bridges of its kind in the world.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lethbridge Viaduct canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4303755 — 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: Lethbridge Viaduct Context triple: [Lethbridge, hasBridge, Lethbridge Viaduct]
-
A.
Salmon Weir Bridge
Salmon Weir Bridge is a notable bridge in Ballina, County Mayo, Ireland, best known for spanning the River Moy near its famous salmon fisheries.
-
B.
Prince Edward Viaduct
The Prince Edward Viaduct is a major multi-span bridge in Toronto, Canada, carrying both road traffic and the city’s subway across the Don Valley and connecting the city’s east and west sides.
-
C.
Pattullo Bridge
The Pattullo Bridge is a major road bridge in Metro Vancouver, British Columbia, connecting the cities of New Westminster and Surrey across the Fraser River.
-
D.
Chaudière Bridge
Chaudière Bridge is a historic bridge spanning the Ottawa River that connects the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
-
E.
Nipigon River Bridge
Nipigon River Bridge is a cable-stayed bridge in Ontario, Canada, notable for carrying the Trans-Canada Highway across the Nipigon River and serving as a key transportation link in northern Ontario.
- 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: Lethbridge Viaduct Target entity description: The Lethbridge Viaduct, also known as the High Level Bridge, is a historic steel railway trestle in Lethbridge, Alberta, and one of the longest and highest bridges of its kind in the world.
-
A.
Salmon Weir Bridge
Salmon Weir Bridge is a notable bridge in Ballina, County Mayo, Ireland, best known for spanning the River Moy near its famous salmon fisheries.
-
B.
Prince Edward Viaduct
The Prince Edward Viaduct is a major multi-span bridge in Toronto, Canada, carrying both road traffic and the city’s subway across the Don Valley and connecting the city’s east and west sides.
-
C.
Pattullo Bridge
The Pattullo Bridge is a major road bridge in Metro Vancouver, British Columbia, connecting the cities of New Westminster and Surrey across the Fraser River.
-
D.
Chaudière Bridge
Chaudière Bridge is a historic bridge spanning the Ottawa River that connects the cities of Ottawa, Ontario and Gatineau, Quebec in Canada.
-
E.
Nipigon River Bridge
Nipigon River Bridge is a cable-stayed bridge in Ontario, Canada, notable for carrying the Trans-Canada Highway across the Nipigon River and serving as a key transportation link in northern Ontario.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
historic structure
ⓘ
railway bridge ⓘ steel trestle bridge ⓘ |
| alsoKnownAs | High Level Bridge NERFINISHED ⓘ |
| builder | Canadian Pacific Railway NERFINISHED ⓘ |
| category |
bridges in Alberta
ⓘ
railway bridges in Canada ⓘ steel bridges ⓘ trestle bridges ⓘ |
| constructionCost | about 1.3 million Canadian dollars (early 1900s) ⓘ |
| constructionEndDate | 1909 ⓘ |
| constructionMethod | riveted steel construction ⓘ |
| constructionStartDate | 1907 ⓘ |
| country | Canada ⓘ |
| crosses |
Oldman River
NERFINISHED
ⓘ
Oldman River valley NERFINISHED ⓘ |
| design | steel trestle ⓘ |
| engineeringSignificance | major early 20th-century railway engineering project in Canada ⓘ |
| gauge | standard gauge railway ⓘ |
| hasFeature |
multiple steel bents
ⓘ
open deck ⓘ |
| hasStructure |
plate girder spans
ⓘ
steel towers ⓘ |
| height |
about 314 feet
ⓘ
about 95.7 meters ⓘ |
| heritageStatus | recognized historic structure in Alberta ⓘ |
| length |
about 1.6 kilometers
ⓘ
about 1624 meters ⓘ |
| locatedIn |
Alberta
ⓘ
Canada ⓘ Lethbridge NERFINISHED ⓘ Oldman River valley near downtown Lethbridge ⓘ |
| maintenance | maintained by Canadian Pacific Railway NERFINISHED ⓘ |
| material | steel ⓘ |
| notableFor |
being one of the highest steel trestle bridges in the world
ⓘ
being one of the longest steel trestle bridges in the world ⓘ |
| numberOfSpans | 44 ⓘ |
| openingDate | 1909 ⓘ |
| owner | Canadian Pacific Railway NERFINISHED ⓘ |
| partOf | Canadian Pacific Railway main line in southern Alberta NERFINISHED ⓘ |
| passesOver | Oldman River floodplain NERFINISHED ⓘ |
| province | Alberta NERFINISHED ⓘ |
| region | southern Alberta NERFINISHED ⓘ |
| status | in use ⓘ |
| trafficType | freight trains ⓘ |
| usedBy | Canadian Pacific Railway NERFINISHED ⓘ |
| usedFor | railway 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: Lethbridge Viaduct Description of subject: The Lethbridge Viaduct, also known as the High Level Bridge, is a historic steel railway trestle in Lethbridge, Alberta, and one of the longest and highest bridges of its kind in the world.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.