Steel Bridge
E82909
Steel Bridge is a historic double-deck vertical-lift bridge in Portland, Oregon, known for carrying both rail and road traffic across the Willamette River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Steel Bridge canonical | 9 |
How this entity was disambiguated
This entity first appeared as the object of triple T605461 — 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: Steel Bridge Context triple: [Willamette River, notableBridge, Steel Bridge]
-
A.
Stone Bridge
Stone Bridge is a historic masonry bridge at Manassas National Battlefield Park that played a notable role in the American Civil War battles fought there.
-
B.
Knife-Edge Bridge
Knife-Edge Bridge is a narrow pedestrian bridge and viewing point that offers dramatic, close-up vistas of Victoria Falls and the surrounding gorge.
-
C.
Grand Bridge
The Grand Bridge is an imposing ornamental stone bridge and landscape feature within the grounds of Blenheim Palace in Oxfordshire, England, designed to enhance the estate’s grand Baroque setting.
-
D.
Son bridge
Son bridge is a strategically important bridge in the Netherlands that played a crucial role during the World War II Allied offensive known as Operation Market Garden.
-
E.
Friday Bridge
Friday Bridge is a small village in Cambridgeshire, England, known for its rural character and location near the town of Wisbech.
- 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: Steel Bridge Target entity description: Steel Bridge is a historic double-deck vertical-lift bridge in Portland, Oregon, known for carrying both rail and road traffic across the Willamette River.
-
A.
Stone Bridge
Stone Bridge is a historic masonry bridge at Manassas National Battlefield Park that played a notable role in the American Civil War battles fought there.
-
B.
Knife-Edge Bridge
Knife-Edge Bridge is a narrow pedestrian bridge and viewing point that offers dramatic, close-up vistas of Victoria Falls and the surrounding gorge.
-
C.
Grand Bridge
The Grand Bridge is an imposing ornamental stone bridge and landscape feature within the grounds of Blenheim Palace in Oxfordshire, England, designed to enhance the estate’s grand Baroque setting.
-
D.
Son bridge
Son bridge is a strategically important bridge in the Netherlands that played a crucial role during the World War II Allied offensive known as Operation Market Garden.
-
E.
Friday Bridge
Friday Bridge is a small village in Cambridgeshire, England, known for its rural character and location near the town of Wisbech.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
double-deck bridge
ⓘ
historic bridge ⓘ truss bridge ⓘ vertical-lift bridge ⓘ |
| carries |
MAX Light Rail
ⓘ
Portland Streetcar ⓘ bicycles ⓘ pedestrians ⓘ rail traffic ⓘ road traffic ⓘ |
| cityServed |
Portland, Oregon, United States
ⓘ
surface form:
Portland, Oregon
|
| constructionStartDate | 1910 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Willamette River ⓘ |
| crossesAt |
Portland City Center
ⓘ
surface form:
Portland city center
|
| designer |
Waddell & Hardesty
ⓘ
surface form:
Waddell & Harrington
|
| hasBikeway | yes ⓘ |
| hasDeckCount | 2 ⓘ |
| hasHeritageStatus | listed on the National Register of Historic Places ⓘ |
| hasLiftSpan | yes ⓘ |
| hasLowerDeck | rail deck ⓘ |
| hasMainSpanLength | about 211 feet ⓘ |
| hasSidewalks | yes ⓘ |
| hasTotalLength | about 1,946 feet ⓘ |
| hasTrafficLanes | 2 road lanes ⓘ |
| hasUpperDeck | roadway deck ⓘ |
| hasVerticalClearanceWhenRaised | about 163 feet ⓘ |
| hasWidth | about 71 feet ⓘ |
| locatedIn |
Oregon
ⓘ
Portland, Oregon, United States ⓘ
surface form:
Portland, Oregon
United States of America ⓘ
surface form:
United States
|
| maintainedBy |
Oregon Department of Transportation
ⓘ
Union Pacific Railroad ⓘ |
| material | steel ⓘ |
| notableFor |
carrying multiple modes of transportation
ⓘ
independent lift of lower deck ⓘ |
| NRHPListingDate | 1984 ⓘ |
| NRHPType | structure ⓘ |
| opened | 1912 ⓘ |
| owner | Union Pacific Railroad ⓘ |
| parallelTo |
Broadway Bridge
ⓘ
Burnside Bridge ⓘ |
| partOf |
Portland street network
ⓘ
surface form:
Portland transportation network
|
| river | Willamette River ⓘ |
| usedFor |
commuter rail
ⓘ
freight rail ⓘ public transit ⓘ vehicular 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: Steel Bridge Description of subject: Steel Bridge is a historic double-deck vertical-lift bridge in Portland, Oregon, known for carrying both rail and road traffic across the Willamette River.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Portland, Oregon