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gptkbp:instanceOf
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gptkb:bridge
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gptkbp:addedToNationalRegisterOfHistoricPlaces
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December 17, 1979
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gptkbp:alsoKnownAs
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gptkb:Houghton–Hancock_Bridge
gptkb:Lift_Bridge
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gptkbp:builder
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gptkb:American_Bridge_Company
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gptkbp:carries
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gptkb:US_Highway_41
gptkb:M-26
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gptkbp:clearanceBelow
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100 feet (raised)
4 feet (lowered)
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gptkbp:connects
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gptkb:Houghton,_Michigan
gptkb:Hancock,_Michigan
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gptkbp:crosses
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gptkb:Portage_Lake
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gptkbp:designer
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gptkb:Hazelet_&_Erdal
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https://www.w3.org/2000/01/rdf-schema#label
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Portage Lake Lift Bridge
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gptkbp:length
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1310 feet
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gptkbp:locatedIn
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gptkb:Houghton_County,_Michigan
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gptkbp:lowerDeckUsedFor
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rail traffic (historically)
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gptkbp:mainSpan
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180 feet
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gptkbp:maintainedBy
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gptkb:Michigan_Department_of_Transportation
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gptkbp:notableFor
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world's heaviest and widest double-decked vertical lift bridge
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gptkbp:NRHPReferenceNumber
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80001855
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gptkbp:numberOfSpans
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gptkb:Keweenaw_Waterway
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gptkbp:opened
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1959
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gptkbp:replacedBy
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gptkb:bridge
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gptkbp:structureType
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double-deck
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gptkbp:upperDeckUsedFor
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automobile traffic
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gptkbp:bfsParent
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gptkb:Portage_Lake
gptkb:Hancock,_Michigan,_United_States
gptkb:Keweenaw_Peninsula
gptkb:Houghton_County
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gptkbp:bfsLayer
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6
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