Oregon Slough Railroad Bridge
E403139
The Oregon Slough Railroad Bridge is a historic swing-span railway bridge in Portland, Oregon, carrying freight and passenger trains across the North Portland Harbor channel of the Columbia River.
All labels observed (4)
| Label | Occurrences |
|---|---|
| BNSF Oregon Slough Railroad Bridge | 1 |
| North Portland Harbor Railroad Bridge | 1 |
| Oregon Slough Bridge | 1 |
| Oregon Slough Railroad Bridge canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2227747 — 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: Oregon Slough Railroad Bridge Context triple: [Portland bridge system, hasPart, Oregon Slough Railroad Bridge]
-
A.
Bixby Creek Bridge
Bixby Creek Bridge is an iconic reinforced-concrete arch bridge along California’s scenic Highway 1, renowned for its dramatic coastal setting and frequent appearance in photography and film.
-
B.
Kinzie Street Railroad Bridge
The Kinzie Street Railroad Bridge is a historic, early 20th-century vertical-lift railroad bridge in downtown Chicago, notable as one of the city’s iconic industrial-era river crossings.
-
C.
Newkirk Viaduct
The Newkirk Viaduct is a historic 19th-century railroad bridge in Philadelphia that played a key role in early rail travel along the Northeast Corridor.
-
D.
Homer M. Hadley Memorial Bridge
The Homer M. Hadley Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington between Seattle and Mercer Island.
-
E.
Garcon Point Bridge
Garcon Point Bridge is a toll bridge in Florida that spans Pensacola Bay, connecting the Garcon Point peninsula with the mainland near Milton and Gulf Breeze.
- 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: Oregon Slough Railroad Bridge Target entity description: The Oregon Slough Railroad Bridge is a historic swing-span railway bridge in Portland, Oregon, carrying freight and passenger trains across the North Portland Harbor channel of the Columbia River.
-
A.
Bixby Creek Bridge
Bixby Creek Bridge is an iconic reinforced-concrete arch bridge along California’s scenic Highway 1, renowned for its dramatic coastal setting and frequent appearance in photography and film.
-
B.
Kinzie Street Railroad Bridge
The Kinzie Street Railroad Bridge is a historic, early 20th-century vertical-lift railroad bridge in downtown Chicago, notable as one of the city’s iconic industrial-era river crossings.
-
C.
Newkirk Viaduct
The Newkirk Viaduct is a historic 19th-century railroad bridge in Philadelphia that played a key role in early rail travel along the Northeast Corridor.
-
D.
Homer M. Hadley Memorial Bridge
The Homer M. Hadley Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington between Seattle and Mercer Island.
-
E.
Garcon Point Bridge
Garcon Point Bridge is a toll bridge in Florida that spans Pensacola Bay, connecting the Garcon Point peninsula with the mainland near Milton and Gulf Breeze.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
historic bridge
ⓘ
railway bridge ⓘ steel bridge ⓘ swing bridge ⓘ truss bridge ⓘ |
| alsoKnownAs |
BNSF Oregon Slough Railroad Bridge
ⓘ
linked to:
Oregon Slough Railroad Bridge
North Portland Harbor Railroad Bridge ⓘ
linked to:
Oregon Slough Railroad Bridge
Oregon Slough Bridge ⓘ
linked to:
Oregon Slough Railroad Bridge
|
| carries |
freight trains
ⓘ
passenger trains ⓘ |
| category |
Bridges in Portland, Oregon
ⓘ
Railroad bridges in Oregon ⓘ Steel truss bridges in the United States ⓘ Swing bridges in the United States ⓘ |
| constructionCompleted | 1908 ⓘ |
| crosses |
Columbia River
ⓘ
North Portland Harbor ⓘ |
| design | swing-span truss ⓘ |
| function | rail transport ⓘ |
| hasComponent |
approach truss spans
ⓘ
pivot pier for swing span ⓘ |
| hasMovableSpan | swing span ⓘ |
| hasNavigationChannel | swing span provides opening for river traffic ⓘ |
| hasOwnerHistory | originally built for a predecessor of BNSF Railway ⓘ |
| heritageStatus | historic structure ⓘ |
| locatedIn |
Multnomah County, Oregon
ⓘ
linked to:
Multnomah County
Oregon ⓘ Portland, Oregon ⓘ
linked to:
Portland, Oregon, United States
United States ⓘ
linked to:
United States of America
|
| locatedOnWaterBody |
North Portland Harbor channel
ⓘ
linked to:
North Portland Harbor
|
| maintainedBy | BNSF Railway ⓘ |
| material | steel ⓘ |
| numberOfSpans | multiple ⓘ |
| opened | 1908 ⓘ |
| owner | BNSF Railway ⓘ |
| partOf |
BNSF Railway network
ⓘ
linked to:
BNSF Railway
rail corridor along the Columbia River ⓘ |
| purpose | to carry rail traffic across North Portland Harbor ⓘ |
| railGauge | standard gauge ⓘ |
| regionServed | Portland metropolitan area ⓘ |
| riverBank | connects mainland Portland to Hayden Island area ⓘ |
| trafficType | rail ⓘ |
| usedBy |
Amtrak trains
ⓘ
BNSF Railway trains ⓘ
linked to:
BNSF Railway
commuter and intercity rail services in the Portland area ⓘ |
| waterway |
Columbia River system
ⓘ
linked to:
Columbia River
|
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: Oregon Slough Railroad Bridge Description of subject: The Oregon Slough Railroad Bridge is a historic swing-span railway bridge in Portland, Oregon, carrying freight and passenger trains across the North Portland Harbor channel of the Columbia River.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Oregon Slough Railroad Bridge
linked to: Oregon Slough Railroad Bridge
linked to: Oregon Slough Railroad Bridge