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A423 Kennington improvements programme

We are improving the Kennington stretch of A423, including the replacement of the existing bridge structure and further additions, to prioritise space for cycling, walking and public transport. The programme will also enable flood alleviation for the area as part of the Oxford Flood Alleviation Scheme (OFAS), to be delivered by the Environment Agency (EA).

Trial holes

From 24 January to 10 February 2023 trial holes are being dug to help plan the diversion of water mains as part of the A423 improvements.

Work will take place at night with the following lane closures:

  • 24 to 30 January: lane 1 (inside lane) eastbound closure between Hinksey Hill interchange and Kennington roundabout
  • 31 January to 3 February: designated left lane closure from A423 Southern Bypass Road eastbound to A4144 Abingdon Road
  • 6 February to 10 February: lane 2 (outside lane) eastbound and westbound closures between Hinksey Hill interchange and Kennington roundabout.

Planning engagement

We hosted a digital exhibition of our plans from Monday 26 September to Sunday 23 October 2022.

We also hosted four walk-in face-to-face sessions where the same information was available and people could ask questions. The events took place at St Luke's Church on Wednesday 28 September and Kennington Village Hall on Thursday 29 September.

The exhibition included a feedback form, the results of which informed our planning submission made on 1 February. A consultation on the plans will open in late February and the planning committee hopes to reach a decision in June.

The feedback form is now closed, but the results will also inform how we keep people updated about these improvements.

Video update

About the improvements

The A423 Kennington improvement programme includes:

  • the replacement of Kennington Rail Bridge.
  • a shared path for walking and cycling.
  • a new eastbound bus lane – also for use by vehicles travelling to Redbridge Park and Ride.
  • increased capacity of the Hinksey streams for flood alleviation.
Ariel view of the area surrounding Kenning bridge

Figure 1. A layout picture showing where the work will take place on the A423

Why we are investing here

We are investing across the county to provide a modern, sustainable travel network to enable people to rely less on their cars. This means putting better bus, as well as cycling and walking infrastructure at the centre of our major projects.

Kennington Rail bridge is in poor condition and needs to be replaced. Reconstruction of the bridge will ensure safety for all users as well as the opportunity to prioritise road space for bus, walking and cycling.

Timescales 

Activity Target date
Public engagement Autumn 2022
Planning application submission Winter 2022
Detailed design Winter 2022 - Summer 2023
Start of main construction Winter 2023/24

This may be subject to change, due to the complexities of the work involved.

What you can expect

Kennington Rail Bridge will remain open until we start building works. We will rebuild the bridge half at a time so that traffic can flow over the remaining half of the bridge.

Temporary widening and contraflow traffic management will also be in place (more details will be available closer to construction).

Phase 1 - Safeguarding work

The bridge has been propped at its piers and its load-carrying capacity of the bridge will be increased for work to be carried out safely.

Phase 2 – Reconstruction

The bridge reconstruction work will involve several elements:

A423 Eastbound Bus Lane

We are proposing to widen the A423 eastbound from Hinksey Hill to introduce an additional all-traffic lane for left-turning vehicles from the A34 Hinksey Hill Roundabout to Old Abingdon Road, creating a three-lane carriageway.

The new lane from Old Abingdon Road to Redbridge Park & Ride will be for exclusive use by buses and vehicles using the Park and Ride. The approach to Kennington Roundabout will become four lanes as a result of the additional bus/ Park and Ride traffic lane.

Walking and cycling facilities

We will create a shared-use path to the north of the A423 by upgrading the existing footway between Hinksey Hill and Old Abingdon Road.

Oxford Flood Alleviation Scheme (OFAS)

The work on the Kennington Rail bridge forms an integral part of OFAS.

Combining the bridge replacement works with the flood alleviation scheme requirements will minimise disruption on the A423 and maximise value for money.

The EA submitted its planning application in March 2022. For more information on OFAS, visit the EA FAQ page on their scheme.

How it is being funded

The scheme is being financed through multiple sources including the county council, Oxfordshire Local Enterprise Partnership and OFAS.

Contact us

If you would like to know more, you can contact us by emailing A423Kenningtonimprovements@oxfordshire.gov.uk