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gptkbp:instance_of
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gptkb:bridge
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gptkbp:architect
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gptkb:H._M._G._Houghton
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gptkbp:building_type
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gptkb:steel
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gptkbp:connects
|
Houghton and Hancock
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gptkbp:constructed_in
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1954-1959
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gptkbp:construction_cost
|
$3.5 million
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gptkbp:crosses
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gptkb:Portage_Lake
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gptkbp:design
|
vertical lift bridge
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gptkbp:designated_as
|
National Historic Civil Engineering Landmark
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gptkbp:emergency_services
|
provides access for emergency vehicles
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gptkbp:features
|
two lanes of traffic
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gptkbp:has
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safety features
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gptkbp:has_public_transport
|
yes
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gptkbp:height
|
100 feet
100 feet above water
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gptkbp:historical_significance
|
important transportation link
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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:is_a
|
landmark in the region
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gptkbp:is_a_site_for
|
community events
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gptkbp:is_a_symbol_of
|
engineering achievement
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gptkbp:is_a_vital
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gptkb:transportation
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gptkbp:is_equipped_with
|
traffic signals
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|
gptkbp:is_featured_in
|
local events
photography and art
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|
gptkbp:is_inspected
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gptkb:annually
|
|
gptkbp:is_known_for
|
its unique design
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|
gptkbp:is_maintained_by
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gptkb:state_government
|
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gptkbp:is_part_of
|
local history
the Keweenaw Peninsula
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|
gptkbp:is_popular_in
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gptkb:tourist_attraction
|
|
gptkbp:is_recognized_by
|
historical societies
|
|
gptkbp:is_significant_for
|
engineering project.
|
|
gptkbp:is_used_by
|
local residents
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|
gptkbp:key
|
infrastructure element
|
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gptkbp:length
|
8,300 feet
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|
gptkbp:level
|
two
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gptkbp:lighting
|
LED lights installed
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gptkbp:location
|
gptkb:Houghton,_Michigan
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gptkbp:maintenance
|
gptkb:Michigan_Department_of_Transportation
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|
gptkbp:opened
|
March 15, 1959
to allow boat passage
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|
gptkbp:opened_for_navigation
|
twice daily
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gptkbp:operated_by
|
bridge tender
|
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gptkbp:owner
|
gptkb:Michigan_Department_of_Transportation
|
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gptkbp:part_of
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gptkb:U._S._Route_29
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|
gptkbp:passenger_traffic
|
motor vehicles
approximately 10,000 vehicles per day
|
|
gptkbp:provides_access_to
|
gptkb:Michigan_Technological_University
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gptkbp:renovated
|
gptkb:2000
|
|
gptkbp:replaced_by
|
old wooden bridge
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|
gptkbp:serves
|
Houghton and Hancock
|
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gptkbp:type
|
lift bridge
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gptkbp:used_for
|
bicycle traffic
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gptkbp:view
|
available for visitors
|
|
gptkbp:wing_configuration
|
400 feet
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gptkbp:bfsParent
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gptkb:Houghton_County
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gptkbp:bfsLayer
|
6
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