M4 : Northbound : A4054 Merthyr Rd, Total Closure Northbound from Birch Hill to Taffs Wells Roundabout : Diversions in place : 17/08/26-07/09/26 2000-0600

Last updated: 17 August 2026

Permit Details

Scheduled Start

Mon 17 Aug at 21:00

Scheduled End

Mon 7 Sept at 07:00

Duration

20 days 10h

TTRO Required

Source

traffic_wales

Description

Description: M4 : Northbound : A4054 Merthyr Rd, Total Closure Northbound from Birch Hill to Taffs Wells Roundabout : Diversions in place : 17/08/26-07/09/26 2000-0600 :, Start time: 17/08/2026 20:00 , End Date: 07/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 14/08/2026 10:27

Traffic Wales © Crown copyright, OGL v3.0.

Location

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Dates

StartMon 17 Aug at 21:00

EndMon 7 Sept at 07:00

Duration20 days 10h

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