Elstree to Hemel Grid Connection

Building to meet the power requirements for a new Data Centre Project in Hertfordshire.

Project Overview

Project Detail

Design and build for a new 132kV grid connection (16.3 km long) between Elstree 400 kV Substation on Hillfield Lane Elstree and a new 132/33 kV Substation required to meet the requirements for a new Data Centre Project in Blossom Way Hemel Hempstead, Hertfordshire, United Kingdom.

Duration
12 Months
Estimated Completion
October 2024

Live Updates

DG
Traffic information
11:10 AM · Nov 16, 2023
11:10 AM · Nov 16, 2023

Current Installation locations (Subject to change), typically 6 days a week, with start and finish date:

13 October - 21 November 2023

High Street. Junction of Bedmond Road to junction of Church Hill.

Traffic Management System: 2 & 3-way traffic lights.

Supervisor: Steve Tandy, 07971 585329

4 October - 22 November 2023

College Road.Junction of High Road to junction of Tibbs Hill Road.

Traffic Management System: 2, 3 & 4-way traffic lights.

Supervisor: Steve Tandy, 07971 585329

23 October - 24 November 2023

Leverstock Green Way.Junction of Leverstock Green Road to junction with Maylands Avenue & St Albans Roundabout.

Traffic Management System: 3 & 4-way traffic lights.

Supervisor: Steve Tandy, 07971 585329.

10 October - 27 November 2023

Otterspool Way. Junction with Park Avenue to junction of Berry Grove Lane.

Traffic Management System: 2, 3 , 4 & 5-way traffic lights with multiway signals restricted to weekends only at major junctions and pinch points.

Supervisor: Steve Tandy, 07971 585329.

30 October - 28 November 2023

Phillipers. Outside 70 to junction with The Gossamers.

Traffic Management System: Road closed from outside 70 Phillippers to junction with The Gossamers.

Supervisor: Steve Tandy, 07971 585329.

Project Manager:

Niall Maguire: 07816 203711
Niall.Maguire@jsmgroup.com

Head Office:

0800 035 0708

Monday to Friday: 08:00–16:00

EW
Traffic information
11:10 AM · Nov 16, 2023
11:10 AM · Nov 16, 2023

Future confirmed installation locations (Subject to change), typically 6 days a week, with start and finish date:

28 November - 11 December 2023

The Gossamers. Junction of The Phillipers to Opposite 1 The Gossamers.

Traffic Management System: 2 & 3-way traffic lights.

22 November - 24 November 2023

Bushey Mill Lane. Outside Bushey Mill National Grid Substation.

Traffic Management System: 3-way traffic lights.

21 November - 7 December 2023

Church Hill. Junction of High Street to opposite 40 Church Hill.

Traffic Management System: 2 & 3-way traffic lights.

Project Manager:

Niall Maguire: 07816 203711
Niall.Maguire@jsmgroup.com

Head Office:

0800 035 0708

Monday to Friday: 08:00–16:00

NM
24/7 weekend works
11:10 AM · Nov 16, 2023
11:10 AM · Nov 16, 2023

Future installation locations (Subject to change), 24/7 weekend working, with start and finish date:

12-15th January 2024

St Albans Road. Outside 887 to junction with Kingsway North Orbital Road.

Traffic Management System: Road closed at the junction with North Orbital Road. 4-way traffic lights.

12-15th January 2024

North Orbital Road.Junction of St Albans Road to junction of Horseshoe Lane.

Traffic Management System: Road closed from its junction with A412 St Albans Road south westwards for a distance of approximately 40 metres. 4 & 6-Way traffic lights.

13-15th January 2024

Horseshoe Lane.Outside 9 to junction with North Orbital Road.Traffic Management System: 6-Way traffic lights.

Traffic Management System: Horseshoe Lane.Outside 9 to junction with North Orbital Road. 6-Way traffic lights.

23rd February 2024 23rd March 2024

Hillfield Lane - Junction of Hillfield Lane to approximately 66m Northeast of junction with Hartspring Lane roundabout

Traffic Management System: Hillfield Lane - 2 & 3-Way Signals

Supervisor: Steve Tandy, 07971 585329

4th March 2024 - 10th April 2024

Bedmond Road South - Approximately 25m South of M25 Bridge to junction of High Street

Traffic Management System: Bedmond Road South - 2, 3 & 4-Way Signals

Supervisor: Steve Tandy, 07971 585329

1st February 2024 - 19th April 2024

Bedmond Road North - Opposite Wheatcroft to junction of Bunkers Lane

Traffic Management System: Bedmond Road North - 2, 3 & 4-Way Signals

Supervisor: Steve Tandy, 07971 585329

6th April 2024 - 14th April 2024

St Albans Road - Opposite 1026 to outside of 875

Traffic Management System: St Albans Road - 2 & 3-Way Signals

Supervisor: TBC

10th April 2024 19th April 2024

Tibbs Hill Road - Opposite 12 to junction of Hight St

Traffic Management System: Tibbs Hill Road - 2 & 3-Way Signals

Supervisor: TBC

21st May 2024 - 13th June 2024 - Subject to Confirmation

Hillfield Lane - Junction of Sandy Lane to 210m Southeast of junction of Sandy Lane

Traffic Management System: TBC

Supervisor: TBC

28th May 2024 - 19th June 2024 - Subject to Confirmation

Hillfield Lane - Outside Delrow House to approximately 183m North of junction of Sandy Lane

Traffic Management System: TBC

Supervisor: TBC

1st June 2024 - 24th June 2024

Hillfield Lane - Outside 40 to outside 66

Traffic Management System: TBC

Supervisor: Steve Tandy, 07971 585329

Hillfield Lane - 05.07.2024-19.07.2024

Approximately 230m South East of junction of Sandy Lane to outside Electrical Distribution Site

Traffic Management System: 2-Way Traffic Signals

Supervisor: John Burke/Steve Tandy

Hillfield Lane - 02.07.2024-01.08.2024

Outside Holland Farm to approximately 230m North West of junction of Sandy Lane

Traffic Management System: 2-Way Traffic Signal

Supervisor: John Burke& Steve Tandy

Hillfield Lane - 02.07.2024-01.08.2024

Opposite No50 to opposite No72

Traffic Management System: Road Closed

Supervisor: Steve Tandy, 07971 585329

Maylands Avenue & Albans Road Roundabout 12.07.2024-03.08.2024

Junction of Breakspear Way to junction of Leverstock Green Way

Traffic Management System: None

Supervisor: Steve Tandy, 07971 585329

Leverstock Green Way 13.07.2024-03.08.2024

12 Barley Croft to junction with Maylands Avenue Roundabout

Traffic Management System: None

Supervisor: Steve Tandy, 07971 585329

Bedmond Road 15.07.2024 - 07.08.2024

Outside Northend Cottage to outside Sibley's Orchard Cottage

Traffic Management System: 3-way set up with manual control at peak hours`

Supervisor: Steve Tandy, 07971 585329

Leverstock Green Road 15.07.2024 - 07.08.2024

Junction of Leverstock Green Way to opposite Ridgefield Cottage

Traffic Management System: 2-Way signals with manual control at peak hours.

Supervisor: Steve Tandy, 07971 585329

Garston Lane 19.07.2024 - 18.08.2024

Junction of Woodhurst Avenue to outside no8 Garston Lane.

Traffic Management System: 2-way signals with manual cover at peak hours

Supervisor: Steve Tandy, 07971 585329

Horseshoe Lane 24.07.2024 - 23.08.2024

Opposite Watford Leisure Centre outside Woodside Court

Traffic Management System: 2-way signal with manual control during peak hours.

Project Manager:

Niall Maguire: 07816 203711
Niall.Maguire@jsmgroup.com

Head Office:

0800 035 0708

Monday to Friday: 08:00–16:00

NM
Traffic Information
16:10 AM · Oct 21, 2024
16:10 AM · Oct 21, 2024

Future confirmed installation locations (Subject to change), typically 6 days a week, with start and finish date:

10 October – 10 January 2025

Bedmond Road

Traffic Management System: Currently carrying out directional drilling operations under the M25 to install 2 x 132kv cable circuits. This entails one set of temporary traffic lights to facilitate a launch pit and equipment to carry out the drill. The other set of lights will facilitate the receive pit and cable trailers to hold the pipe ready to install. These lights are manually controlled during peak times (07:00 - 09:30 & 16:00 - 18:30). Both manned operatives on the traffic lights are in constant radio contact with two-way radios to keep the traffic flowing. Due to the hard build up of the existing ground conditions this is a slow process to ensure that there is no adverse impact on the M25 running surface.

Supervisor: Steve Tandy 07971 585 239 and Toby Tudor (holiday cover only) 07415 200 492

21 October – 20 November 2024

Woodmere Avenue. Outside 91 to junction of Douglas Avenue

Traffic Management System: 3-way traffic lights with manual control at peak times

Supervisor: Steve Tandy, 07971 585329

21 October – 25 November 2024

Berry Grove Lane. Opposite Berry Grove Pumping Station to junction with Bushey Mill Lane

Traffic Management System: Full road closure with manual control at peak times

Supervisor: Steve Tandy, 07971 585329

21 October – 23 November 2024

Bushey Mill Lane. Opposite 197 to opposite 213

Traffic Management System: 3-way traffic lights with manual control at peak times

Supervisor: Steve Tandy, 07971 585329

Project Manager:

Niall Maguire: 07816 203711
Niall.Maguire@jsmgroup.com

Head Office:

0800 035 0708

Monday to Friday: 08:00–16:00

See more updates

Project Map