Summit Tunnel

E721092

historic site railroad tunnel railway infrastructure

Summit Tunnel is a historic railroad tunnel driven through the Sierra Nevada in California, notable for its challenging 19th-century construction as part of the First Transcontinental Railroad.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
Summit Tunnel canonical	1
Summit Tunnel (Tunnel 6)	1
Tunnel No. 6	1

How this entity was disambiguated

This entity first appeared as the object of triple T8255221 — 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: Summit Tunnel
Context triple: [Summit Tunnel in the Sierra Nevada, alsoKnownAs, Summit Tunnel]

A. Sumner Tunnel
The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
B. Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
C. O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
D. Anton Anderson Memorial Tunnel
The Anton Anderson Memorial Tunnel is a combined rail and highway tunnel in Alaska that provides the only road access to the town of Whittier through the Chugach Mountains.
E. Malinta Tunnel
Malinta Tunnel is a historic underground complex on Corregidor Island in the Philippines that served as a bomb-proof headquarters and hospital for American and Filipino forces during World War II.
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: Summit Tunnel
Target entity description: Summit Tunnel is a historic railroad tunnel driven through the Sierra Nevada in California, notable for its challenging 19th-century construction as part of the First Transcontinental Railroad.

A. Sumner Tunnel
The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
B. Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
C. O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
D. Anton Anderson Memorial Tunnel
The Anton Anderson Memorial Tunnel is a combined rail and highway tunnel in Alaska that provides the only road access to the town of Whittier through the Chugach Mountains.
E. Malinta Tunnel
Malinta Tunnel is a historic underground complex on Corregidor Island in the Philippines that served as a bomb-proof headquarters and hospital for American and Filipino forces during World War II.
F. None of above. chosen

Statements (39)

Predicate	Object
instanceOf	historic site ⓘ railroad tunnel ⓘ railway infrastructure ⓘ
associatedWith	Central Pacific–Union Pacific transcontinental route ⓘ linked to: Union Pacific–Central Pacific rail connection Chinese railroad workers ⓘ
builtBy	Central Pacific Railroad ⓘ
category	First Transcontinental Railroad infrastructure ⓘ linked to: First Transcontinental Railroad Historic civil engineering works in the United States ⓘ Railroad tunnels in California ⓘ
constructionEndDate	1867 ⓘ
constructionMethod	hand drilling and black powder blasting ⓘ nitroglycerin blasting in later stages ⓘ
constructionStartDate	1865 ⓘ
country	United States ⓘ linked to: United States of America
crosses	Sierra Nevada crest near Donner Pass ⓘ linked to: Truckee Pass in the Sierra Nevada
elevation	approximately 7,000 feet above sea level ⓘ
gauge	standard gauge ⓘ
hasHeritageStatus	historic railroad structure ⓘ
historicalPeriod	19th century ⓘ
laterOperator	Southern Pacific Railroad ⓘ Union Pacific Railroad ⓘ
locatedIn	California ⓘ linked to: California, United States Nevada County, California ⓘ Placer County, California ⓘ linked to: Placer County Sierra Nevada ⓘ
locatedNear	Donner Pass ⓘ
material	granite ⓘ
nearbyFeature	Donner Lake ⓘ Historic Donner Pass wagon route ⓘ
notableFor	challenging 19th-century mountain tunneling ⓘ role in completion of the First Transcontinental Railroad ⓘ use of Chinese immigrant labor ⓘ
opened	1867 ⓘ
originalOperator	Central Pacific Railroad ⓘ
partOf	Central Pacific Railroad main line ⓘ linked to: Central Pacific Railroad historic route First Transcontinental Railroad ⓘ
passesThrough	Sierra Nevada granite ridge ⓘ
significance	enabled rail crossing of the Sierra Nevada for the transcontinental line ⓘ
usedFor	rail transport ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Summit Tunnel in the Sierra Nevada → alsoKnownAs → Summit Tunnel ⓘ

Summit Tunnel in the Sierra Nevada → alsoKnownAs → Tunnel No. 6 ⓘ

linked to: Summit Tunnel

Southern Pacific Donner Pass line → hasStructure → Summit Tunnel (Tunnel 6) ⓘ