Colorado Street Bridge
E78046
The Colorado Street Bridge is a historic early-20th-century concrete arch bridge in Pasadena, California, renowned for its distinctive Beaux-Arts design and dramatic span over the Arroyo Seco.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Colorado Street Bridge canonical | 5 |
| Colorado Street Bridge vicinity | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T422210 — 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: Colorado Street Bridge Context triple: [Pasadena, hasLandmark, Colorado Street Bridge]
-
A.
Mike O’Callaghan–Pat Tillman Memorial Bridge
The Mike O’Callaghan–Pat Tillman Memorial Bridge is a concrete arch bridge spanning the Colorado River near Hoover Dam, notable for carrying U.S. Route 93 between Nevada and Arizona and for being one of the highest bridges in the United States.
-
B.
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.
-
C.
145th Street Bridge
The 145th Street Bridge is a swing bridge in New York City that carries vehicular and pedestrian traffic between Manhattan and the Bronx.
-
D.
Theodore Roosevelt Bridge
The Theodore Roosevelt Bridge is a major highway bridge over the Potomac River in Washington, D.C., carrying traffic between the city and Arlington, Virginia.
-
E.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
- 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: Colorado Street Bridge Target entity description: The Colorado Street Bridge is a historic early-20th-century concrete arch bridge in Pasadena, California, renowned for its distinctive Beaux-Arts design and dramatic span over the Arroyo Seco.
-
A.
Mike O’Callaghan–Pat Tillman Memorial Bridge
The Mike O’Callaghan–Pat Tillman Memorial Bridge is a concrete arch bridge spanning the Colorado River near Hoover Dam, notable for carrying U.S. Route 93 between Nevada and Arizona and for being one of the highest bridges in the United States.
-
B.
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.
-
C.
145th Street Bridge
The 145th Street Bridge is a swing bridge in New York City that carries vehicular and pedestrian traffic between Manhattan and the Bronx.
-
D.
Theodore Roosevelt Bridge
The Theodore Roosevelt Bridge is a major highway bridge over the Potomac River in Washington, D.C., carrying traffic between the city and Arlington, Virginia.
-
E.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
concrete arch bridge
ⓘ
historic bridge ⓘ |
| addedToNationalRegisterOfHistoricPlaces | 1981 ⓘ |
| architect |
Waddell & Hardesty
ⓘ
surface form:
Waddell & Harrington
|
| carries | Colorado Boulevard ⓘ |
| city | Pasadena ⓘ |
| completionDate | 1913 ⓘ |
| constructionStartDate | 1912 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Arroyo Seco ⓘ |
| designStyle | Beaux-Arts ⓘ |
| engineer |
Waddell & Hardesty
ⓘ
surface form:
Waddell & Harrington
|
| era | early 20th century ⓘ |
| hasDesignFeature |
decorative railings
ⓘ
open-spandrel arches ⓘ ornamental light standards ⓘ |
| hasLighting | ornamental street lamps ⓘ |
| hasSafetyFeature | suicide prevention barriers ⓘ |
| hasTraffic |
motor vehicles
ⓘ
pedestrians ⓘ |
| hasViewOf |
Arroyo Seco
ⓘ
San Gabriel Mountains ⓘ |
| height | approximately 150 feet ⓘ |
| heritageDesignation | National Register of Historic Places ⓘ |
| isContributingPropertyTo |
Arroyo Seco Parkway
ⓘ
surface form:
Arroyo Seco Parkway historic corridor
|
| isTouristAttraction | true ⓘ |
| length | approximately 1,486 feet ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Los Angeles County ⓘ
surface form:
Los Angeles County, California
Pasadena ⓘ
surface form:
Pasadena, California
United States of America ⓘ
surface form:
United States
|
| locatedInHistoricArea | Arroyo Seco ⓘ |
| maintainedBy |
Pasadena
ⓘ
surface form:
City of Pasadena
|
| material | reinforced concrete ⓘ |
| nicknamed | Suicide Bridge ⓘ |
| notableFor |
distinctive Beaux-Arts design
ⓘ
dramatic span over the Arroyo Seco ⓘ |
| NRHPType | structure ⓘ |
| numberOfArches | 11 ⓘ |
| openingDate | 1913 ⓘ |
| owner |
Pasadena
ⓘ
surface form:
City of Pasadena
|
| partOf | historic transportation infrastructure of Pasadena ⓘ |
| reasonForNickname | history of suicides from the bridge ⓘ |
| roadTypeCarried | urban arterial street ⓘ |
| seismicRetrofit | 1990s ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| underwentRehabilitation | 1990s ⓘ |
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: Colorado Street Bridge Description of subject: The Colorado Street Bridge is a historic early-20th-century concrete arch bridge in Pasadena, California, renowned for its distinctive Beaux-Arts design and dramatic span over the Arroyo Seco.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Colorado Street Bridge vicinity