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The Welsh Government’s traffic information service for motorways and trunk roads in Wales

A40 Canaston Bridge (Toch Lane) to Narberth Rd Roundabout 24/06/20 -  02/07/20 lane closures for LFFN Scheme


Where and Why?

Work will be undertaken to prepare for installations of fibre optic communications for intelligent transport systems on the A40 from west of Canaston Bridge (Toch Lane) to Narberth Road Roundabout layby. Works will be undertaken on weekdays with daytime working only. Lane closures will be used to protect the workforce and the travelling public while work is undertaken.

Work will affect the eastbound carriageway with a lane closure starting 24/06/20 and expected to continue until 01/07/20. The lane closure will start at Toch Lane and will be moved daily, as work progresses east towards the Narberth Road Roundabout. The westbound carriageway will have a single 5km lane closure on Thursday 02/07/20.

The Welsh Government is delivering a multi-million pound upgrade and extension scheme to its fibre optic communications network. This network provides the backbone for intelligent transport systems to manage the safe operation of the motorway and trunk road in Wales, from CCTV cameras to electronic messages, to traffic counters and emerging digital highway technologies. These systems ensure that our emergency services receive key information when it’s most needed, help to minimise congestion and to deliver safety measures whilst providing data for future road schemes.

The programme will provide resilience for our existing fibre network to help us ensure critical systems and information are always available to our teams and for the safety of road users.

Diversions and Safety Measures

The works are being carried out during daytime hours to allow the work to progress effectively within seasonal environmental constraints.

Our contractors will be implementing safe methods of working to adhere to physical distancing measures.

Given the current drop in road traffic, the danger from passing vehicles usually faced by the workforce at the roadside is significantly reduced.

The A40 will remain open throughout the works to avoid disruption to essential travel.

Programme of traffic management restrictions

Intermittent lane closure eastbound from Toch Lane to the layby east of Narberth Road Roundabout 24/06/20 until 01/07/20, daytime only.

Canaston Bridge Roundabout will have a lane closure on Friday 26/06/20, daytime only.

 Narberth Road Roundabout will have a lane closure on Wednesday 01/07/20, daytime only.

Single 5km lane closure on the westbound carriageway on Thursday 02/07/20, daytime only.

Temporary traffic lights will be used where necessary to safely control traffic over sections of single-lane carriageway.


For further information, please contact Traffic Wales on 0300 123 1213 or via Twitter @TrafficWalesS

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