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gptkbp:instance_of
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gptkb:cave
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gptkbp:bfsLayer
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4
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gptkbp:bfsParent
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gptkb:Birkenhead
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gptkbp:accessibility
|
ADA compliant
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gptkbp:annual_ridership
|
approximately 30,000 vehicles
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gptkbp:capacity
|
40,000 vehicles per day
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gptkbp:community_impact
|
beneficial for local economy
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gptkbp:connects
|
Birkenhead and Liverpool
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gptkbp:constructed_in
|
gptkb:1966
gptkb:1971
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gptkbp:construction_cost
|
£10 million
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gptkbp:construction_material
|
reinforced concrete
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gptkbp:cooling_system
|
natural ventilation
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gptkbp:depth
|
approximately 30 feet
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|
gptkbp:design
|
cut-and-cover
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gptkbp:emergency_services
|
gptkb:stock_market_index
provided at intervals
provided by ventilation shafts
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|
gptkbp:environmental_impact
|
studies conducted
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|
gptkbp:explores
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two main entrances
clear directional signs provided
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|
gptkbp:features
|
two lanes of traffic
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|
gptkbp:flows_into
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one-way traffic system
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gptkbp:followed_by
|
gptkb:Kingsway_Tunnel
|
|
gptkbp:has_exit
|
two main exits
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|
gptkbp:has_public_transport
|
buses allowed
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|
gptkbp:height
|
4.8 meters
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|
gptkbp:historical_significance
|
part of Merseyside's transport history
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|
https://www.w3.org/2000/01/rdf-schema#label
|
Birkenhead Tunnel
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gptkbp:is_used_by
|
commuters
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|
gptkbp:length
|
3.6 kilometers
2.2 miles
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|
gptkbp:lighting
|
LED lighting installed
synchronized with traffic flow
|
|
gptkbp:location
|
gptkb:Birkenhead,_England
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gptkbp:maintenance
|
gptkb:Mersey_Tunnel_Authority
regular inspections conducted
|
|
gptkbp:navigable
|
not used
|
|
gptkbp:opened
|
gptkb:Queen_Elizabeth_II
gptkb:1971
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|
gptkbp:operator
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gptkb:Merseytravel
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|
gptkbp:part_of
|
Mersey Tunnels system
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gptkbp:preceded_by
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gptkb:Queensway_Tunnel
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gptkbp:renovated
|
upgrades in 2000s
ongoing maintenance work
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|
gptkbp:reports_to
|
available online
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gptkbp:safety_features
|
fire suppression system
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gptkbp:safety_record
|
reported and analyzed.
|
|
gptkbp:seating_capacity
|
motor vehicles
traffic signals used
|
|
gptkbp:security_features
|
CCTV surveillance installed
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|
gptkbp:significance
|
important transport link
|
|
gptkbp:spillway_type
|
studied for improvements
|
|
gptkbp:surface
|
asphalt
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|
gptkbp:transportation
|
no tolls
monitored by cameras
|
|
gptkbp:type
|
gptkb:cave
|
|
gptkbp:width
|
7.3 meters
|