Dartford Cable Tunnel

Tunnel under the river Thames in London, England

Dartford Cable Tunnel

Location
Country| UK
Coordinates| 51°28′5″N 0°14′58″E﻿ / ﻿51.46806°N 0.24944°E﻿ / 51.46806; 0.24944
Ownership information
Owner| National Grid plc
Construction information
Commissioned| 2004
Technical information
Type| Underground tunnel
Type of current| AC
AC voltage| 400 kV

The Dartford Cable Tunnel is a 2.4 km utility tunnel beneath the Thames, upstream of the Dartford Crossing. With a diameter of ~3 m (10 ft), it carries a 400 kV National Grid electrical transmission cable. It is accessible by foot as a crossing of the Thames, but by authorised personnel only.[1][2][3] It was built in 2003–04 at a cost of £11 million (equivalent to £22 million in 2023).[4] The tunnel plays a crucial role in maintaining electrical supply infrastructure beneath the Thames, ensuring reliable power transmission.[citation needed]

## See also

[edit]

* 400 kV Thames Crossing
* Thames Cable Tunnel
* Utility vault
* Crossings of the River Thames
* Tunnels underneath the River Thames

## References

[edit]

1. ^ "National Grid builds new Thames tunnel at Dartford". Nce.co.uk. 1 May 2003. Retrieved 15 July 2015.
2. ^ "ABB completes Dartford Cable Tunnel HV cable installation". Voltimum.co.uk. 3 April 2006. Retrieved 15 July 2015.
3. ^ [1] Archived 29 October 2004 at the Wayback Machine
4. ^ Nicolas Janberg (23 July 2014). "Dartford Cable Tunnel (Dartford, 2005) | Structurae". En.structurae.de. Retrieved 15 July 2015.

51°27′58″N 0°15′25″E﻿ / ﻿51.466°N 0.257°E﻿ / 51.466; 0.257

Crossings of the River Thames

| West:
Docklands Light Railway tunnel to Woolwich Arsenal
| Dartford Cable Tunnel
| East:
Dartford Tunnels

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