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Road Closure - Redbourn Road - St Albans

Why are you laying a new water main?

At Affinity Water, we are committed to providing high quality water and helping to protect the environment for all generations.

You may have heard about our campaign ‘Save Our Streams’ which aims to help customers reduce their water use through free water saving devices, tailored advice and home water efficiency checks.

The challenges of climate change, increases in population and demand for water means that some of our globally rare habitats, such as chalk streams are under threat. Chalk streams have been described as England’s ‘Amazon’ and are rarer than coral reefs or Bengal Tigers. This means we must do all we can to protect them and leave more water in the natural environment.

We take water from deep below ground, which feeds into some chalk streams on the surface. The new water main, which represents an investment of £5.8 million, will allow us to move water around our supply area more efficiently. This means we will be able to keep more water in the ground to help your local chalk stream, the River Ver, whilst continuing to provide your community with a reliable and high-quality supply of water for many years to come.

How will it affect customers?

Road closures and diversion routes will be needed to complete the project.

We have identified domestic and commercial customers that will be affected by the works and will be providing information to them in advance, detailing a point of contact, the expected impact and duration.

Hertfordshire Highways Department are working closely with us to ensure that road closures, diversions and traffic management plans consider key infrastructure such as hospitals, vaccination and testing centres.

The working hours are as follows: Monday to Saturday 7am to 7pm and Sunday 9am to 4pm.

This page will be kept up to date with information on the project.


Where will we be working?

The installation of the new water main will require a rolling road closure of Redbourn Road in approximately 200m sections. The works will start at the Batchwood roundabout and be completed close to the crossing of the River Ver near Shafford Cottages.


Phase 1 – Redbourn Road (A5183) lane closure – Monday, September 13th - for an expected duration of 12 weeks.

We’ll be installing the new water main in your area over the coming weeks and our contractor, J Browne Construction, will be completing the work on our behalf. To do this, we may need to work directly outside your property. We know that road works can be inconvenient, and we would like to apologise for any disruption this may cause. Please be assured that this work is essential, and we’ll do our best to keep any disruption to a minimum.

What traffic management will be in place?

There will be a one-way road closure of Redbourn Road for traffic travelling toward St Albans. This road closure will be clearly signed at the Redbourn roundabout with a diversion in place. A one-way traffic system will be in place for vehicles travelling away from St Albans on Redbourn Road through the road works.

What is the diversion route?

  • At the Redbourn roundabout, take the A5183
  • At the next roundabout, take the 3rd exit onto Redbourn Lane
  • At the next roundabout, take the 3rd exit onto St Albans Rd/A1081
  • Continue to follow A1081 and turn right onto Batchwood Drive

Location of Phase 1 and Diversion Route

The map below shows the location of the works on Redbourn Road highlighted in yellow and diversion route for traffic highlighted in blue.

Why is this Traffic Management Plan being used?

We’ve worked closely with and revisited the plans with the Highways Agency and the Council to minimise any disruption. This lane closure plan is the best solution for us to complete the works as quickly as we can and to keep our teams and the public safe.

  • The new main is being installed under the St Albans bound lane in Redbourn Road, as a large gas main is already installed under the opposite lane.
  • It would be unsafe to allow traffic to travel on the opposite carriageway and we’d also have to divert pedestrians off the single-track footway.
  • It was decided that temporary traffic lights were not a suitable option as this would lead to larger traffic delays, more congestion in St Albans and a risk if red signal changes were ignored. This option would also increase the duration by a further six weeks.

Will there be further phases of this project?

The Hemel to Stonecross project is scheduled to take place in multiple phases from September 2021 to June 2022. The installation will also be taking place on Batchwood Drive and sections of Harpenden Road. Further notifications will be provided for these phases.


We are fully COVID-19 compliant, and our teams follow Government & Public Health protocols to ensure the safety of customers and staff.


The next phase of our works will be starting on Batchwood Drive in January 2022, we wanted to let you know in plenty of time.

When we’ll be working

Dates: 10th January 2022 to end of July 2022

Working Hours: Monday to Saturday 7am to 7pm & Sunday 9am to 4pm

How does this affect you?

Your water: Your water supply will continue running as normal.

Noise: You may hear noise during the works; however, we’ve put plans in place to minimise the disruption, especially in the evenings.

Traffic Management

From 10th – 28th January, a small section of the northbound lane with be closed on Batchwood Drive from the Redbourn Road roundabout. The southbound lane will remain open. This road closure will be clearly signed in advance with a diversion route in place.

From 28th January – end of July, the road will be open in both directions with temporary traffic lights in place. Our work will be done in sections along the length of Batchwood Drive, starting at the Redbourn Road end and finishing at the Ancient Briton/Harvester junction. The position of the traffic lights will move as we progress along the length of the road. You may want to allow extra time for your journey.

Access: Where we need to, areas of the road and footpath will be coned off before we start digging, to make the area safe for the public and our teams.

Relocation of bus stops: We may need to relocate the bus stops where necessary. There’ll be signs to explain this.

How can I find out more?

Come and see us on Wednesday 17th November – we’ll have a stall at the market on St Peter’s Street so you can talk to us about our plans, find out more about what we’re doing and ask us any questions. We’d love to see you and listen to your feedback.

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