Saigon River Tunnel (Thu Thiem Tunnel)
E786592
The Saigon River Tunnel (Thu Thiem Tunnel) is an underwater road tunnel in Ho Chi Minh City that connects District 1 with the Thu Thiem area in Thu Duc City, easing traffic across the Saigon River.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Saigon River Tunnel (Thu Thiem Tunnel) canonical | 1 |
| Thu Thiem Tunnel | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9250209 — 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: Saigon River Tunnel (Thu Thiem Tunnel) Context triple: [Saigon Bridge, nearbyInfrastructure, Saigon River Tunnel (Thu Thiem Tunnel)]
-
A.
Boustead Tunnel
Boustead Tunnel is a key water conveyance tunnel in Colorado that diverts Western Slope water under the Continental Divide to supply the Arkansas River basin.
-
B.
Saigon Bridge
Saigon Bridge is a major road bridge in Ho Chi Minh City, Vietnam, serving as a key transportation link across the Saigon River and an important part of the city’s infrastructure.
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C.
Chee Tor Tunnel
Chee Tor Tunnel is a former railway tunnel in Derbyshire, England, now part of the Monsal Trail walking and cycling route through the Peak District.
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D.
Thuan Phuoc Bridge
Thuan Phuoc Bridge is a large modern suspension bridge in Da Nang, Vietnam, known for spanning the Han River near its mouth and serving as a prominent city landmark.
-
E.
Vĩnh Tuy Bridge
Vĩnh Tuy Bridge is a major road bridge spanning the Red River in Hanoi, Vietnam, helping connect central urban districts and ease traffic congestion.
- 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: Saigon River Tunnel (Thu Thiem Tunnel) Target entity description: The Saigon River Tunnel (Thu Thiem Tunnel) is an underwater road tunnel in Ho Chi Minh City that connects District 1 with the Thu Thiem area in Thu Duc City, easing traffic across the Saigon River.
-
A.
Boustead Tunnel
Boustead Tunnel is a key water conveyance tunnel in Colorado that diverts Western Slope water under the Continental Divide to supply the Arkansas River basin.
-
B.
Saigon Bridge
Saigon Bridge is a major road bridge in Ho Chi Minh City, Vietnam, serving as a key transportation link across the Saigon River and an important part of the city’s infrastructure.
-
C.
Chee Tor Tunnel
Chee Tor Tunnel is a former railway tunnel in Derbyshire, England, now part of the Monsal Trail walking and cycling route through the Peak District.
-
D.
Thuan Phuoc Bridge
Thuan Phuoc Bridge is a large modern suspension bridge in Da Nang, Vietnam, known for spanning the Han River near its mouth and serving as a prominent city landmark.
-
E.
Vĩnh Tuy Bridge
Vĩnh Tuy Bridge is a major road bridge spanning the Red River in Hanoi, Vietnam, helping connect central urban districts and ease traffic congestion.
- F. None of above. chosen
Statements (37)
| Predicate | Object |
|---|---|
| instanceOf |
road tunnel
ⓘ
transport infrastructure ⓘ urban expressway tunnel ⓘ |
| alsoKnownAs | Thu Thiem Tunnel ⓘ |
| connects |
District 1, Ho Chi Minh City
ⓘ
Thu Thiem area, Thu Duc City ⓘ
linked to:
Thu Thiem New Urban Area
|
| constructionMethod | immersed tube tunnel ⓘ |
| constructionStartDate | 2005 ⓘ |
| country |
Vietnam
ⓘ
linked to:
Viet Nam
|
| crosses | Saigon River ⓘ |
| designedFor |
cars
ⓘ
trucks ⓘ |
| designedSpeedLimit | 60 km/h ⓘ |
| hasEmergencyExits | yes ⓘ |
| hasFireProtectionSystem | yes ⓘ |
| hasTrafficMonitoringSystem | yes ⓘ |
| hasVentilationSystem | yes ⓘ |
| laneConfiguration | 3 lanes per direction ⓘ |
| length |
approximately 1,490 m
ⓘ
approximately 1.49 km ⓘ |
| locatedIn |
Ho Chi Minh City
ⓘ
linked to:
Saigon
|
| locatedInDistrict |
District 1
ⓘ
Thu Duc City ⓘ |
| maximumDepthBelowWaterSurface | about 24 m ⓘ |
| notDesignedFor |
motorbikes on main carriageway (normally restricted)
ⓘ
pedestrians ⓘ |
| numberOfImmersedElements | 4 ⓘ |
| numberOfLanes | 6 ⓘ |
| openedBy | Ho Chi Minh City People’s Committee ⓘ |
| openingDate | 2011-11-20 ⓘ |
| operator | Ho Chi Minh City Department of Transport ⓘ |
| partOf | East–West Highway (Ho Chi Minh City) ⓘ |
| purpose |
connect central Ho Chi Minh City with Thu Thiem new urban area
ⓘ
ease traffic congestion across the Saigon River ⓘ |
| significance |
first underwater road tunnel in Vietnam
ⓘ
one of the key components of Ho Chi Minh City’s East–West traffic axis ⓘ |
| 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: Saigon River Tunnel (Thu Thiem Tunnel) Description of subject: The Saigon River Tunnel (Thu Thiem Tunnel) is an underwater road tunnel in Ho Chi Minh City that connects District 1 with the Thu Thiem area in Thu Duc City, easing traffic across the Saigon River.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Saigon River Tunnel (Thu Thiem Tunnel)