Trajan's Bridge
E877658
Trajan's Bridge was an ancient Roman engineering marvel built under Emperor Trajan to span the Danube River during the Dacian Wars.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Trajan's Bridge canonical | 2 |
| Trajan’s Bridge over the Danube | 2 |
| Trajan Bridge over the Mureș | 1 |
| Trajan's Bridge archaeological site | 1 |
| Trajan’s Bridge | 1 |
| remains of Trajan's Bridge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10659155 — 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: Trajan's Bridge Context triple: [Bridge over the Danube, alsoKnownAs, Trajan's Bridge]
-
A.
Tiberius Bridge
Tiberius Bridge is an ancient Roman stone bridge in Rimini, Italy, renowned for its well-preserved arches and historical significance as part of the Via Aemilia.
-
B.
Römerbrücke
Römerbrücke is an ancient Roman stone bridge in Trier, Germany, renowned as one of the oldest standing bridges north of the Alps and a key example of Roman engineering.
-
C.
Iskandariah Bridge
Iskandariah Bridge is a historic arch bridge in Kuala Kangsar, Malaysia, renowned for its distinctive colonial-era design and role as a key crossing over the Perak River.
-
D.
Byala Bridge
Byala Bridge is a historic 19th-century stone arch bridge in Bulgaria, renowned for its elegant architecture and engineering across the Yantra River.
-
E.
Tacitus Bridge
Tacitus Bridge is a major cable-stayed road bridge spanning the River Waal in the Netherlands, known for its distinctive twin pylons and role in regional traffic.
- 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: Trajan's Bridge Target entity description: Trajan's Bridge was an ancient Roman engineering marvel built under Emperor Trajan to span the Danube River during the Dacian Wars.
-
A.
Tiberius Bridge
Tiberius Bridge is an ancient Roman stone bridge in Rimini, Italy, renowned for its well-preserved arches and historical significance as part of the Via Aemilia.
-
B.
Römerbrücke
Römerbrücke is an ancient Roman stone bridge in Trier, Germany, renowned as one of the oldest standing bridges north of the Alps and a key example of Roman engineering.
-
C.
Iskandariah Bridge
Iskandariah Bridge is a historic arch bridge in Kuala Kangsar, Malaysia, renowned for its distinctive colonial-era design and role as a key crossing over the Perak River.
-
D.
Byala Bridge
Byala Bridge is a historic 19th-century stone arch bridge in Bulgaria, renowned for its elegant architecture and engineering across the Yantra River.
-
E.
Tacitus Bridge
Tacitus Bridge is a major cable-stayed road bridge spanning the River Waal in the Netherlands, known for its distinctive twin pylons and role in regional traffic.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Roman bridge
ⓘ
arch bridge ⓘ segmental arch bridge ⓘ stone-wood bridge ⓘ |
| alsoKnownAs |
Bridge of Apollodorus over the Danube
ⓘ
linked to:
Danube Bridge of Trajan
|
| architect | Apollodorus of Damascus ⓘ |
| associatedWithCampaign |
Second Dacian War
ⓘ
linked to:
Dacian Wars
|
| builtBy | Roman Empire ⓘ |
| builtFor | Dacian Wars ⓘ |
| builtUnder |
Emperor Trajan
ⓘ
linked to:
Trajan
|
| commissionedBy | Trajan ⓘ |
| completedIn | AD 105 ⓘ |
| constructionEnd | AD 105 ⓘ |
| constructionStart | AD 103 ⓘ |
| crosses |
Danube River
ⓘ
linked to:
Danube
|
| culturalSignificance | symbol of Roman conquest of Dacia ⓘ |
| currentCondition | only piers and foundations remain ⓘ |
| depictedOn |
Roman coins
ⓘ
Trajan's Column ⓘ |
| designer | Apollodorus of Damascus ⓘ |
| engineeringFeature |
massive concrete and stone piers founded in the riverbed
ⓘ
wooden arches resting on stone piers ⓘ |
| heightAboveWater | approximately 19 meters ⓘ |
| heritageStatus | archaeological site ⓘ |
| historicalPeriod | Roman Empire ⓘ |
| length |
approximately 1.1 kilometers
ⓘ
approximately 1135 meters ⓘ |
| locatedInPresentDay |
Romania
ⓘ
Serbia ⓘ |
| locatedOn |
Danube River
ⓘ
linked to:
Danube
|
| material |
stone piers
ⓘ
wooden superstructure ⓘ |
| namedAfter | Trajan ⓘ |
| nearAncientSettlement |
Drobeta
ⓘ
linked to:
Drobeta-Turnu Severin
|
| nearModernCity | Drobeta-Turnu Severin ⓘ |
| nearModernSettlement | Kladovo ⓘ |
| notableFor |
advanced Roman engineering techniques
ⓘ
being one of the longest arch bridges of the ancient world ⓘ |
| numberOfArches | 20 ⓘ |
| partiallyDestroyedBy | natural causes ⓘ |
| pierHeight | approximately 45 meters ⓘ |
| possiblyDismantledBy | Romans ⓘ |
| purpose |
facilitate Roman military campaigns in Dacia
ⓘ
secure supply lines across the Danube ⓘ |
| reasonForDismantling | to prevent barbarian crossings ⓘ |
| riverBankLocation | between Drobeta-Turnu Severin and Kladovo ⓘ |
| spanLength | approximately 38 meters per arch ⓘ |
| status | ruined ⓘ |
| width | approximately 15 meters ⓘ |
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: Trajan's Bridge Description of subject: Trajan's Bridge was an ancient Roman engineering marvel built under Emperor Trajan to span the Danube River during the Dacian Wars.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Trajan's Bridge
linked to: Trajan's Bridge
linked to: Trajan's Bridge
linked to: Trajan's Bridge
linked to: Trajan's Bridge
linked to: Trajan's Bridge