Thomas Viaduct
E569276
Thomas Viaduct is a historic early 19th-century stone railroad bridge in Maryland, notable as one of the oldest multiple-arch railroad bridges still in use in the United States.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Thomas Viaduct canonical | 4 |
| Thomas Viaduct railroad bridge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6112430 — 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: Thomas Viaduct Context triple: [Elkridge, hasHistoricSite, Thomas Viaduct]
-
A.
Viaducto
Viaducto is a Mexico City Metro station on Line 2 serving the southern part of the city near the Viaducto Miguel Alemán expressway.
-
B.
Neisse Viaduct
The Neisse Viaduct is a historic railway bridge spanning the Lusatian Neisse River near Görlitz, notable for connecting Germany and Poland and symbolizing cross-border transport and heritage.
-
C.
Lechmere Viaduct
Lechmere Viaduct is a historic concrete arch bridge in Boston that carries MBTA Green Line trains across the Charles River between Boston and Cambridge.
-
D.
Ypsilon Bridge
Ypsilon Bridge is a distinctive cable-stayed pedestrian bridge in Drammen, Norway, known for its Y-shaped design and modern architectural style.
-
E.
Okertal Bridge
The Okertal Bridge is a notable road bridge spanning the Oker River in the Harz region of Germany, known for its scenic surroundings and role in regional transportation.
- 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: Thomas Viaduct Target entity description: Thomas Viaduct is a historic early 19th-century stone railroad bridge in Maryland, notable as one of the oldest multiple-arch railroad bridges still in use in the United States.
-
A.
Viaducto
Viaducto is a Mexico City Metro station on Line 2 serving the southern part of the city near the Viaducto Miguel Alemán expressway.
-
B.
Neisse Viaduct
The Neisse Viaduct is a historic railway bridge spanning the Lusatian Neisse River near Görlitz, notable for connecting Germany and Poland and symbolizing cross-border transport and heritage.
-
C.
Lechmere Viaduct
Lechmere Viaduct is a historic concrete arch bridge in Boston that carries MBTA Green Line trains across the Charles River between Boston and Cambridge.
-
D.
Ypsilon Bridge
Ypsilon Bridge is a distinctive cable-stayed pedestrian bridge in Drammen, Norway, known for its Y-shaped design and modern architectural style.
-
E.
Okertal Bridge
The Okertal Bridge is a notable road bridge spanning the Oker River in the Harz region of Germany, known for its scenic surroundings and role in regional transportation.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
historic place
ⓘ
multiple-arch bridge ⓘ stone railroad bridge ⓘ |
| architect | Benjamin Henry Latrobe II ⓘ |
| builder | Baltimore and Ohio Railroad ⓘ |
| builtFor | Baltimore and Ohio Railroad ⓘ |
| carriedBy | Baltimore and Ohio Railroad main line ⓘ |
| connects |
Elkridge, Maryland
ⓘ
linked to:
Elkridge
Relay, Maryland ⓘ |
| constructionMaterial | stone ⓘ |
| constructionStartDate | 1833 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| county |
Baltimore County, Maryland
ⓘ
linked to:
Baltimore County
Howard County, Maryland ⓘ
linked to:
Howard County
|
| crosses |
Patapsco River
ⓘ
Patapsco River Valley ⓘ
linked to:
Patapsco Valley gorge
|
| engineer | Benjamin Henry Latrobe II ⓘ |
| hasCategory |
Bridges on the National Register of Historic Places in Maryland
ⓘ
National Historic Landmarks in Maryland ⓘ Railroad bridges in Maryland ⓘ Stone arch bridges in the United States ⓘ |
| hasDesign | stone arch bridge ⓘ |
| hasHeight | about 59 feet ⓘ |
| hasLength | about 612 feet ⓘ |
| hasNumberOfTracks | 2 ⓘ |
| hasShape | curved bridge ⓘ |
| hasWidth | about 26 feet ⓘ |
| heritageDesignation |
National Historic Landmark
ⓘ
National Register of Historic Places listing ⓘ
linked to:
National Register of Historic Places
|
| heritageDesignationDate | 1964 ⓘ |
| isOneOf | oldest multiple-arch railroad bridges still in use in the United States ⓘ |
| locatedIn |
Maryland
ⓘ
United States ⓘ
linked to:
United States of America
|
| locatedNear |
Elkridge, Maryland
ⓘ
linked to:
Elkridge
Relay, Maryland ⓘ |
| namedAfter | Philip E. Thomas ⓘ |
| notableFor |
continuous railroad use since the 1830s
ⓘ
early 19th-century stone arch railroad engineering ⓘ |
| NRHPReferenceNumber | 66000385 ⓘ |
| numberOfSpans | 8 ⓘ |
| openingDate | 1835 ⓘ |
| ownedBy | CSX Transportation ⓘ |
| partOf |
B&O Railroad Washington Branch
ⓘ
linked to:
B&O Railroad line
|
| state | Maryland ⓘ |
| status | in use ⓘ |
| usedFor | rail transport ⓘ |
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: Thomas Viaduct Description of subject: Thomas Viaduct is a historic early 19th-century stone railroad bridge in Maryland, notable as one of the oldest multiple-arch railroad bridges still in use in the United States.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.