Major roads affected by closures on Saturday, April 18 | Wales Online
Need to know
A closure is in place on part of the M48 Severn Bridge
The M48 Severn Bridge is one of a number major roads affected by closures on Saturday(Image: John Myers)
A number of major road closures are in place in Wales today, Saturday, April 18. Drivers are advised to plan journeys carefully, allow extra time, and check local diversion routes. For the second day there is a major closure on the M48 Severn Bridge to allow roadworks to be completed, with delays possible in the area. Other routes have temporary traffic lights or have been shut completely for work to be carried out. Here are all the road closures you need to know about:
M48 Severn Bridge: Closed westbound between J1 Aust and J2 Newhouse due to maintenance work. From April 17 to April 20 between 8pm and 6am. Diversions are in place.
A48, Crosshands, Carmarthenshire: One lane closed due to roadworks on The A48 Westbound from A476 Llandeilo Road (Cross Hands Roundabout, Cross Hands) to Foelgastell Junction (Foelgastell). Expect delays. Until April 24.
A525, Coedpoeth, Wrexham: Lane closed due to roadworks on A525 between Rhos Berse Road (Coedpoeth) and Heritage Way (Caego). Until 4.30 on April 24.
A4161 Castle Street, Cardiff: Lane closed due to roadworks on A4161 Castle Street around High Street. Until 1am on April 1, 2027.
M48 Severn Bridge: Temporary gross weight limit of 7.5 tonnes due to bridge maintenance work on M48 Severn Bridge in both directions between J2 A466 Wye Valley Link Road (Chepstow) and J1 A403 (Aust). For lorries only. Buses and coaches can use the bridge as normal. Until May 27,
A40, Brecon Road, Abergavenny: Temporary traffic lights due to gas main work on A40 Brecon Road near Union Road West. Expect delays. Until May 13.
A4042, Llanellen, Monmouthshire: Temporary traffic lights due to water main work on A4042 near the B4269. Expect delays. Until April 24.
A4051, Malpas Road, Newport: Temporary traffic lights due to gas main work on A4051 Malpas Road near Goodrich Crescent. Expect delays. Until June 4.
A4216, Cockett Road, Sketty, Swansea: Temporary traffic lights due to electricity work on A4216 Cockett Road at Townhill Road. Expect delays. Until October 1, 2026.
A494 High Street, Bala: Temporary traffic lights due to roadworks on A494 High Street in both directions at Tegid Street. Until April 28.
A470, Cwmbelan, Powys: Temporary traffic lights due to roadworks on A470 at the Cwmbelan turn off. Until April 24.
A525, Coedpoeth, Wrexham: Lane closed due to roadworks on A525 between Rhos Berse Road (Coedpoeth) and Heritage Way (Caego). Until 4.30pm on April 24.
A483, Coed-y-Dinas, Powys: Stop/go boards and roadworks on A483 near A490 (Sarn Bryn Caled roundabout). Until May 4.
A470, Betws-y-Coed: Temporary traffic lights due to long-term roadworks on A470 near Zip World. Until September 30, 2026.
