Plans unveiled for £17 million congestion-busting scheme on the M4 nr Swindon

M4 Junction 15

A multi-million pound scheme near Swindon to help tackle congestion and unlock the development of thousands of new homes is to get under way this month.

Highways England, the company responsible for England’s motorways and major A roads, is working with Swindon Borough Council, Swindon and Wiltshire Local Enterprise Partnership and developers Persimmon and Redrow to build extra lanes at M4 Junction 15 and improve local road access from the motorway.

The £17.5 million, 12-month project starts next week and will improve journey times and reliability for motorists by tackling congestion at both the busy M4 junction and on the A419, particularly at peak times in the area.

Highways England’s Growth and Housing Fund has helped to support economic growth, facilitate employment opportunities and enable housing development across the country, and £5 million is being invested in the junction upgrade, which is being jointly funded by Swindon Borough Council (£4.8m), SWLEP (£3m) and Persimmon and Redrow (£4.35m).

The upgrade follows the start of two major Swindon Borough Council schemes – the Wichelstowe underpass project further south near M4 junction 16, and improvement work at the White Hart junction, a vital link between the A419 and A420.

The M4 junction 15 programme of work will involve:

  • widening of the A419 southbound approach to M4 J15 Commonhead Roundabout from 2 to 3 lanes, with a dedicated left lane for London-bound traffic;
  • widening of the A419 northbound exit from M4 J15 to 3 lanes up to the Highways England compound entrance, and back to 2 lanes north of the compound exit;
  • widening of the A346 to the south of M4 Junction 15 from 1 to 2 lanes; and from 2 to 3 lanes on the immediate approach to the roundabout;
  • widening of the M4 J15 eastbound exit slip road from 2 to 3 lanes;
  • lengthening of the 3-lane M4 J15 westbound exit slip road;
  • widening of the M4 J15 southern circulatory carriageway from 2 to 4 lanes;
  • upgrading existing footpaths and installing a new signalised pedestrian crossing over the M4 Junction 15 westbound entry slip road.

Mark Fox, South West Head of Scheme Delivery for Highways England, said: “Our roads are vital for the country and its economic success – they connect businesses and communities and support employment and new homes. We will make every effort to ensure that the impact on the local community is kept to an absolute minimum, we’ve started with some preparatory work, and as the scheme progresses we will communicate any changes via roadside signage.”

Swindon Borough Council’s £4.8 million investment will complement more than £72.5 million in road improvements at the nearby New Eastern Villages development.

Councillor Gary Sumner, Swindon Borough Council’s Cabinet Member for Strategic Infrastructure, Transport and Planning, said: “Anyone who has sat in the tailbacks at Junction 15 of the M4 at peak periods knows just why these improvements are needed.

“I am pleased this vital work is about to start as it will relieve congestion on what is a notoriously busy bottleneck. This is a further of example of the Council investing in the Borough’s road network to benefit both local residents and the wider Swindon economy.”

Paddy Bradley, CEO of the Swindon and Wiltshire Local Enterprise Partnership, added: “The collaboration between partners to bring together the necessary funding will lead to the improvement of major routes around Swindon to keep pace with the future development of the New Eastern Villages.”