|
gptkbp:instance_of
|
gptkb:cave
|
|
gptkbp:breathability
|
natural and mechanical
|
|
gptkbp:challenges
|
overcoming riverbed conditions
|
|
gptkbp:community_events
|
held nearby
|
|
gptkbp:connects
|
Dartford to Thurrock
|
|
gptkbp:construction_cost
|
£12 million
|
|
gptkbp:construction_method
|
cut-and-cover
|
|
gptkbp:construction_started
|
gptkb:1961
gptkb:1963
|
|
gptkbp:crosses
|
gptkb:River_Thames
|
|
gptkbp:cultural_references
|
featured in films and literature
|
|
gptkbp:design_features
|
aesthetic considerations included.
|
|
gptkbp:emergency_exits
|
yes
|
|
gptkbp:emergency_services
|
2
yes
conducted regularly
intercom system
|
|
gptkbp:employees
|
employed locally
|
|
gptkbp:enforces
|
no hazardous materials
monitored by control center
|
|
gptkbp:environmental_impact
|
studies conducted
|
|
gptkbp:environmental_initiatives
|
wildlife protection initiatives
|
|
gptkbp:future_plans
|
potential upgrades
|
|
gptkbp:has_public_transport
|
limited
|
|
gptkbp:has_toll
|
yes
varies by vehicle type
|
|
gptkbp:height_limit
|
4.8 meters
|
|
gptkbp:historical_significance
|
gptkb:first_road_tunnel_under_River_Thames
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Dartford Tunnel
|
|
gptkbp:impact
|
economic benefits to Dartford and Thurrock
|
|
gptkbp:length
|
1.5 miles
|
|
gptkbp:location
|
Dartford, Kent, England
|
|
gptkbp:maintenance
|
gptkb:Highways_England
|
|
gptkbp:max_speed
|
50 mph
|
|
gptkbp:opened
|
gptkb:Queen_Elizabeth_II
gptkb:1963
|
|
gptkbp:part_of
|
gptkb:Dartford_Crossing
|
|
gptkbp:passenger_traffic
|
CCTV monitoring
approximately 50,000 vehicles per day
common during peak hours
|
|
gptkbp:public_reaction
|
generally positive
|
|
gptkbp:route
|
A2 and M25
|
|
gptkbp:safety_features
|
gptkb:Cooler
|
|
gptkbp:toll_payment_method
|
electronic and cash
|
|
gptkbp:toll_plaza_location
|
gptkb:Dartford_Crossing
|
|
gptkbp:tourist_attraction
|
yes
|
|
gptkbp:tunnel_depth
|
up to 30 meters below riverbed
|
|
gptkbp:tunnel_maintenance_frequency
|
regular inspections
|
|
gptkbp:type
|
gptkb:cave
|
|
gptkbp:width_limit
|
2.55 meters
|
|
gptkbp:wing_configuration
|
LED lights
7.3 meters
immersed tube
|
|
gptkbp:bfsParent
|
gptkb:Dartford_Crossing
|
|
gptkbp:bfsLayer
|
5
|