A470Cardiff to Llandudno · 186 mi

A470

Planned closures and overnight roadworks on the A470. For live incidents see A470 traffic.

Planned works

A470 closures

Updated 16:17 · refreshes every 5 min

17/09/2026 8:00

Rhayader, Water main work, Road closed, Diversion, 17/09/26-18/09/26 0800-1800 :

Rhayader · Traffic Wales

07/09/2026 20:00

Nantgarw, 07/09/26-19/09/26 2000-0600, Maintenance work, Exit slip road closed, Closed, Diversions in place :

Nantgarw · Traffic Wales

15/09/2026 20:00

Coryton, 15/09/26-22/09/26 2000-0600, J32, M4 Resurfacing work, Closed, Diversions in place :

Coryton · Traffic Wales

14/09/2026 20:00

Coryton, 14/09/26-15/09/26 2000-0600, Resurfacing work, Closed, Diversions in place :

Coryton · Traffic Wales

14/09/2026 19:00

Doldowlod to Builth Wells, Resurfacing work, Road closed, Bontnewydd, Diversion, 14/09/26-26/09/26 1900-0600 :

Doldowlod to Builth Wells · Traffic Wales

07/09/2026 19:00

Builth Wells Ty Gwyn Bends, Resurfacing work, Diversions in place, 07/09/26-14/09/26 1900-0700 :

Builth Wells Ty Gwyn Bends · Traffic Wales

About this road

The A470 at a glance

The A470 runs the length of Wales from Cardiff Bay to Llandudno, and its busy end is the dual carriageway between Cardiff and Merthyr Tydfil, where most of its congestion and roadworks sit. Data comes from Traffic Wales and refreshes every 5 minutes.

All roads

Check another route

M6Rugby to Carlisle M25London orbital M5West Bromwich to Exeter M1London to Leeds M4London to South Wales M62Liverpool to Hull M60Manchester orbital M11London to Cambridge