Portage Lake Lift Bridge (original) (raw)

dbo:Infrastructure/length

0.1524 (dbd:kilometre)

dbo:abstract

The Portage Lake Lift Bridge (officially the Houghton–Hancock Bridge) connects the cities of Hancock and Houghton, in the US state of Michigan. It crosses Portage Lake, a portion of the waterway which cuts across the Keweenaw Peninsula with a canal linking the final several miles to Lake Superior to the northwest. US Highway 41 (US 41) and M-26 are both routed across the bridge. It is the only land-based link between the north (so-called Copper Island) and south sections of the Keweenaw peninsula. In June 2022, it was dedicated as a National Historic Civil Engineering Landmark. This moveable bridge is a lift bridge with the middle section capable of being lifted from its low point of four feet clearance over the water to a clearance of 100 feet (30 m) to allow boats to pass underneath. The bridge is the world's heaviest and widest double-decked vertical-lift bridge. More than 35,000 tons of concrete and 7,000 tons of steel went into the bridge, which replaced the narrow 54-year-old swing bridge, declared a menace to navigation on the busy Keweenaw Waterway. Hancock and Houghton hold an annual celebration called Bridgefest to commemorate the opening of the bridge which united their two communities. (en)

dbo:crosses

dbr:Portage_Waterway

dbo:height

54.864000 (xsd:double)

dbo:length

152.400000 (xsd:double)

dbo:locatedInArea

dbo:mainspan

76.200000 (xsd:double)

dbo:maintainedBy

dbr:Michigan_Department_of_Transportation

dbo:openingYear

1959-01-01 (xsd:gYear)

dbo:thumbnail

wiki-commons:Special:FilePath/Houghton_2019_Aerial.jpg?width=300

dbo:type

dbr:Vertical-lift_bridge

dbo:unitedStatesNationalBridgeId

3380

dbo:vehiclesPerDay

20000 (xsd:nonNegativeInteger)

dbo:wikiPageExternalLink

dbo:wikiPageID

763257 (xsd:integer)

dbo:wikiPageLength

9600 (xsd:nonNegativeInteger)

dbo:wikiPageRevisionID

1095043374 (xsd:integer)

dbo:wikiPageWikiLink

dbp:below

About fully raised) (en)
fully lowered (en)
raised to intermediate position (en)

dbp:bridgeName

Portage Lake Lift Bridge (en)

dbp:crosses

Portage Waterway arm of Portage Lake (en)

dbp:design

dbr:Vertical-lift_bridge

dbp:id

3380 (xsd:integer)

dbp:length

approx (en)

dbp:locale

Hancock and Houghton, Michigan (en)

dbp:mainspan

clearance (en)

dbp:maint

dbr:Michigan_Department_of_Transportation

dbp:officialName

Houghton–Hancock Bridge (en)

dbp:open

1959 (xsd:integer)

dbp:traffic

>20,000 (en)

dbp:width

lower deck: single-track railroad was abandoned 1982. (en)
both decks: 4 lanes with no shoulders (en)

dbp:wikiPageUsesTemplate

dbp:wordnet_type

http://www.w3.org/2006/03/wn/wn20/instances/synset-bridge-noun-1

dct:subject

georss:point

47.123768 -88.574706

rdf:type

rdfs:comment

The Portage Lake Lift Bridge (officially the Houghton–Hancock Bridge) connects the cities of Hancock and Houghton, in the US state of Michigan. It crosses Portage Lake, a portion of the waterway which cuts across the Keweenaw Peninsula with a canal linking the final several miles to Lake Superior to the northwest. US Highway 41 (US 41) and M-26 are both routed across the bridge. It is the only land-based link between the north (so-called Copper Island) and south sections of the Keweenaw peninsula. In June 2022, it was dedicated as a National Historic Civil Engineering Landmark. (en)

rdfs:label