Penobscot Narrows Bridge
E1034089
The Penobscot Narrows Bridge is a modern cable-stayed bridge in Maine notable for its striking design and public observatory tower overlooking the Penobscot River.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Penobscot Narrows Bridge canonical | 9 |
| Penobscot Narrows Bridge and Observatory | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T11896141 — 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: Penobscot Narrows Bridge Context triple: [Fort Knox (Maine), hasNearbyStructure, Penobscot Narrows Bridge]
-
A.
Sakonnet River Bridge
The Sakonnet River Bridge is a highway bridge in eastern Rhode Island that carries traffic across the Sakonnet River between Aquidneck Island and the mainland.
-
B.
Dubuc Bridge
Dubuc Bridge is a major road bridge spanning the Saguenay River in Saguenay, Quebec, serving as a key transportation link in the region.
-
C.
Algonquin Bridge
Algonquin Bridge is a pedestrian bridge located on the Toronto Islands, providing a scenic crossing between parts of the island park system.
-
D.
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.
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E.
Casco Bay Bridge
The Casco Bay Bridge is a major bascule bridge in Portland, Maine, carrying U.S. Route 1 over the Fore River and serving as a key transportation link in the region.
- 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: Penobscot Narrows Bridge Target entity description: The Penobscot Narrows Bridge is a modern cable-stayed bridge in Maine notable for its striking design and public observatory tower overlooking the Penobscot River.
-
A.
Sakonnet River Bridge
The Sakonnet River Bridge is a highway bridge in eastern Rhode Island that carries traffic across the Sakonnet River between Aquidneck Island and the mainland.
-
B.
Dubuc Bridge
Dubuc Bridge is a major road bridge spanning the Saguenay River in Saguenay, Quebec, serving as a key transportation link in the region.
-
C.
Algonquin Bridge
Algonquin Bridge is a pedestrian bridge located on the Toronto Islands, providing a scenic crossing between parts of the island park system.
-
D.
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.
-
E.
Casco Bay Bridge
The Casco Bay Bridge is a major bascule bridge in Portland, Maine, carrying U.S. Route 1 over the Fore River and serving as a key transportation link in the region.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
cable-stayed bridge
ⓘ
road bridge ⓘ tourist attraction ⓘ |
| carries |
Maine State Route 3
ⓘ
U.S. Route 1 ⓘ |
| connectedTo | Fort Knox State Historic Site ⓘ |
| connects |
Bucksport, Maine
NERFINISHED
ⓘ
Prospect, Maine NERFINISHED ⓘ |
| constructionBegan | 2003 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses | Penobscot River ⓘ |
| hasAlternateName |
Penobscot Narrows Bridge and Observatory
ⓘ
linked to:
Penobscot Narrows Bridge
|
| hasDesign | cable-stayed ⓘ |
| hasFeature |
Penobscot Narrows Observatory
ⓘ
public observatory tower ⓘ |
| hasLanes | 2 lanes ⓘ |
| hasObservationDeck | yes ⓘ |
| hasToll | no ⓘ |
| length | about 2,120 feet ⓘ |
| locatedIn |
Bucksport, Maine
NERFINISHED
ⓘ
Hancock County, Maine ⓘ Maine ⓘ Prospect, Maine NERFINISHED ⓘ United States ⓘ
linked to:
United States of America
Waldo County, Maine ⓘ |
| mainSpanLength | about 1,161 feet ⓘ |
| maintainedBy | Maine Department of Transportation ⓘ |
| material |
concrete
ⓘ
steel ⓘ |
| namedAfter | Penobscot River ⓘ |
| notableFor |
modern cable-stayed design
ⓘ
public observatory tower overlooking the Penobscot River ⓘ |
| numberOfTowers | 2 ⓘ |
| observationDeckType | glass-enclosed observatory ⓘ |
| observatoryHeight | about 420 feet above water ⓘ |
| opened | 2006 ⓘ |
| openedObservatory | 2007 ⓘ |
| openedToTraffic | December 2006 ⓘ |
| partOf |
U.S. Route 1 corridor
ⓘ
linked to:
U.S. Route 1
|
| rankedAs | one of the tallest public bridge observatories in the world ⓘ |
| replaced | Waldo–Hancock Bridge ⓘ |
| state | Maine ⓘ |
| towerHeight | about 420 feet ⓘ |
| trafficType | motor vehicles ⓘ |
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: Penobscot Narrows Bridge Description of subject: The Penobscot Narrows Bridge is a modern cable-stayed bridge in Maine notable for its striking design and public observatory tower overlooking the Penobscot River.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Penobscot Narrows Bridge
linked to: Penobscot Narrows Bridge