Road closure archive

Search previously cleared incidents, planned works and cancelled closures. Use precise date ranges or focus on a particular corridor to understand how the network has been disrupted recently.

Live incident
Active roadworks
Planned
Cleared
Hover or tap markers for full details

Move Insights

Thinking of moving to this area?

Check flood risk, planning history, EPC ratings and more with a Move Insights property report.

Flood risk assessment
Planning history
EPC ratings & more

80 archived incidents found

Filters applied: Region: isle-of-anglesey • Status: Cleared

A55 : Black Bridge, Holyhead : Closed : Maintenance work : Diversions in place : 14/04/26-15/04/26 2100-0000 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 3 months 2 weeks ago

Started Start time TBC Ended 14 Apr 2026, 23:05

Description: A55 : Black Bridge, Holyhead : Closed : Maintenance work : Diversions in place : 14/04/26-15/04/26 2100-0000 :, Start time: 14/04/2026 21:00 , End Date: 15/04/2026 0:00, Severity: Road closure, Source: Welsh Government, Last updated: 14/04/2026 21:00

View update

A55 : Eastbound : J11 Llandygai : Onslip closed : Diversions in place : 12/04/26-13/04/26 2100-0600 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 3 months 3 weeks ago

Started Start time TBC Ended 13 Apr 2026, 05:05

Description: A55 : Eastbound : J11 Llandygai : Onslip closed : Diversions in place : 12/04/26-13/04/26 2100-0600 :, Start time: 12/04/2026 21:00 , End Date: 13/04/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 12/04/2026 21:00

View update

A55 : Now open : Both directions : Britannia Bridge

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 3 months 3 weeks ago

Started Start time TBC Ended 10 Apr 2026, 22:40

Description: A55 : Now open : Both directions : Britannia Bridge, Start time: 10/04/2026 23:15 , Expected end time: 10/04/2026 23:20, Severity: Slight, Source: Welsh Government, Last updated: 10/04/2026 23:15

View update

A55 : Both directions : Britannia Bridge :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 3 months 3 weeks ago

Started Start time TBC Ended 10 Apr 2026, 22:30

Description: A55 : Both directions : Britannia Bridge :, Start time: 10/04/2026 23:16 , Expected end time: 11/04/2026 7:16, Severity: Slight, Source: Welsh Government, Last updated: 10/04/2026 23:16

View update

A55 : Westbound : J9 Treborth : Onslip closed : Diversions in place : 24/03/26-28/03/26 2000-0500 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 4 months 1 week ago

Started Start time TBC Ended 28 Mar 2026, 05:05

Description: A55 : Westbound : J9 Treborth : Onslip closed : Diversions in place : 24/03/26-28/03/26 2000-0500 :, Start time: 24/03/2026 20:00 , End Date: 28/03/2026 5:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/03/2026 20:00

View update

A55 : Now open : Westbound : J2 Ty Mawr to J1 Kingsland (Holyhead)

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 4 months 1 week ago

Started Start time TBC Ended 26 Mar 2026, 02:25

Description: A55 : Now open : Westbound : J2 Ty Mawr to J1 Kingsland (Holyhead), Start time: 26/03/2026 1:02 , Expected end time: 26/03/2026 1:07, Severity: Severe, Source: Welsh Government, Last updated: 26/03/2026 1:02

View update

A5 : Eastbound : Holyhead : Test :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 4 months 3 weeks ago

Started Start time TBC Ended 9 Mar 2026, 19:10

Description: A5 : Eastbound : Holyhead : Test :, Start time: 09/03/2026 18:39 , Expected end time: 09/03/2026 18:55, Severity: Road closure, Source: Welsh Government, Last updated: 09/03/2026 18:39

View update

A55 : Westbound : J9 Treborth : Electrical work : Onslip closed : Diversions in place : 16/02/26-05/03/26 2000-0500 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 4 months 4 weeks ago

Started Start time TBC Ended 5 Mar 2026, 05:05

Description: A55 : Westbound : J9 Treborth : Electrical work : Onslip closed : Diversions in place : 16/02/26-05/03/26 2000-0500 :, Start time: 16/02/2026 20:00 , End Date: 05/03/2026 5:00, Severity: Road closure, Source: Welsh Government, Last updated: 04/03/2026 7:30

View update

A55 : Westbound : J9 Treborth : Onslip closed : Electrical work : Diversions in place : 16/02/26-04/03/26 2000-0500 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 5 months 16 hours ago

Started Start time TBC Ended 4 Mar 2026, 05:05

Description: A55 : Westbound : J9 Treborth : Onslip closed : Electrical work : Diversions in place : 16/02/26-04/03/26 2000-0500 :, Start time: 16/02/2026 20:00 , End Date: 04/03/2026 5:00, Severity: Road closure, Source: Welsh Government, Last updated: 27/02/2026 14:12

View update

A55 : Now clear : Britannia Bridge : High winds : Advisory restrictions in place to motorcycles and caravans on bridge : Until further notice

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 5 months 2 days ago

Started Start time TBC Ended 2 Mar 2026, 11:40

Description: A55 : Now clear : Britannia Bridge : High winds : Advisory restrictions in place to motorcycles and caravans on bridge : Until further notice, Start time: 02/03/2026 10:13 , Expected end time: 02/03/2026 10:18, Severity: Slight, Source: Welsh Government, Last updated: 02/03/2026 10:13

View update

A55 : Westbound : J9 Treborth : 16/02/26-28/02/26 2000-0500 : Resurfacing work : Entry slip road closed : Diversions in place :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 5 months 1 week ago

Started Start time TBC Ended 27 Feb 2026, 14:20

Description: A55 : Westbound : J9 Treborth : 16/02/26-28/02/26 2000-0500 : Resurfacing work : Entry slip road closed : Diversions in place :, Start time: 16/02/2026 20:00 , End Date: 28/02/2026 5:00, Severity: Road closure, Source: Welsh Government, Last updated: 16/02/2026 20:00

View update

A55 : Now open : Both directions : Britannia Bridge : Speed limit 30 mph : Due to high winds : Until further notice

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 5 months 1 week ago

Started Start time TBC Ended 22 Feb 2026, 06:05

Description: A55 : Now open : Both directions : Britannia Bridge : Speed limit 30 mph : Due to high winds : Until further notice, Start time: 22/02/2026 5:47 , Expected end time: 22/02/2026 5:52, Severity: Slight, Source: Welsh Government, Last updated: 22/02/2026 5:47

View update

A55 : Now clear : Eastbound : J10 Caernarfon Road to J11 Llandygai : Incident : Vehicle fire : Lane closed : Long delays

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 5 months 4 weeks ago

Started Start time TBC Ended 7 Feb 2026, 17:45

Description: A55 : Now clear : Eastbound : J10 Caernarfon Road to J11 Llandygai : Incident : Vehicle fire : Lane closed : Long delays, Start time: 07/02/2026 16:17 , Expected end time: 07/02/2026 16:22, Severity: Road closure, Source: Welsh Government, Last updated: 07/02/2026 16:17

View update

A55 : Both directions : J6 Nant Turnpike (Llangefni) to J11 Llandygai : Adverse weather conditions : Snow : Poor driving conditions :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 7 months 13 hours ago

Started Start time TBC Ended 4 Jan 2026, 08:15

Description: A55 : Both directions : J6 Nant Turnpike (Llangefni) to J11 Llandygai : Adverse weather conditions : Snow : Poor driving conditions :, Start time: 03/01/2026 23:52 , Expected end time: 04/01/2026 8:00, Severity: Moderate, Source: Welsh Government, Last updated: 03/01/2026 23:52

View update

A55 : Both directions : J11 Llandygai to J9 Treborth : Adverse weather conditions : Snow : Poor driving conditions : Until further notice

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 7 months 2 days ago

Started Start time TBC Ended 2 Jan 2026, 15:05

Description: A55 : Both directions : J11 Llandygai to J9 Treborth : Adverse weather conditions : Snow : Poor driving conditions : Until further notice, Start time: 02/01/2026 12:51 , Expected end time: 02/01/2026 15:00, Severity: Severe, Source: Welsh Government, Last updated: 02/01/2026 12:51

View update

A55 : Now open : Eastbound : J10 Caernarfon Road to J11 Llandygai

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 7 months 2 days ago

Started Start time TBC Ended 2 Jan 2026, 14:20

Description: A55 : Now open : Eastbound : J10 Caernarfon Road to J11 Llandygai, Start time: 02/01/2026 12:50 , Expected end time: 02/01/2026 12:55, Severity: Road closure, Source: Welsh Government, Last updated: 02/01/2026 12:50

View update

A55 : Westbound : J3 Pen Caledog (Valley) to J2 Ty Mawr : 23/12/25 0630-1630 : Maintenance work : 1 lane closed :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 7 months 1 week ago

Started Start time TBC Ended 23 Dec 2025, 16:35

Description: A55 : Westbound : J3 Pen Caledog (Valley) to J2 Ty Mawr : 23/12/25 0630-1630 : Maintenance work : 1 lane closed :, Start time: 23/12/2025 6:30 , End Date: 23/12/2025 16:30, Severity: Moderate, Source: Welsh Government, Last updated: 23/12/2025 6:30

View update

A55 : Now open : Britannia Bridge : High winds

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 7 months 2 weeks ago

Started Start time TBC Ended 15 Dec 2025, 04:30

Description: A55 : Now open : Britannia Bridge : High winds, Start time: 15/12/2025 4:09 , Expected end time: 15/12/2025 4:14, Severity: Slight, Source: Welsh Government, Last updated: 15/12/2025 4:09

View update

A55 : Now open : Westbound : J9 Treborth

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 7 months 3 weeks ago

Started Start time TBC Ended 11 Dec 2025, 00:00

Description: A55 : Now open : Westbound : J9 Treborth, Start time: 10/12/2025 22:30 , Expected end time: 10/12/2025 22:35, Severity: Road closure, Source: Welsh Government, Last updated: 10/12/2025 22:30

View update

A55 : Both directions : J9 Treborth to J1 Kingsland (Holyhead) : Adverse weather conditions : Flooding : Poor driving conditions :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 7 months 4 weeks ago

Started Start time TBC Ended 5 Dec 2025, 20:45

Description: A55 : Both directions : J9 Treborth to J1 Kingsland (Holyhead) : Adverse weather conditions : Flooding : Poor driving conditions :, Start time: 05/12/2025 18:52 , Expected end time: 05/12/2025 23:00, Severity: Moderate, Source: Welsh Government, Last updated: 05/12/2025 18:52

View update

A55 : Now open : Westbound : J7A Llanfair PG to J7 Cefn Du

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 8 months 2 weeks ago

Started Start time TBC Ended 19 Nov 2025, 22:10

Description: A55 : Now open : Westbound : J7A Llanfair PG to J7 Cefn Du, Start time: 19/11/2025 20:42 , Expected end time: 19/11/2025 20:47, Severity: Road closure, Source: Welsh Government, Last updated: 19/11/2025 20:42

View update

A55 : Westbound : J10 Caernarfon Road to J9 Treborth : Resurfacing work : 1 lane closed : 17/11/25-19/11/25 1800-0530 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 8 months 2 weeks ago

Started Start time TBC Ended 19 Nov 2025, 05:35

Description: A55 : Westbound : J10 Caernarfon Road to J9 Treborth : Resurfacing work : 1 lane closed : 17/11/25-19/11/25 1800-0530 :, Start time: 17/11/2025 18:00 , End Date: 19/11/2025 5:30, Severity: Moderate, Source: Welsh Government, Last updated: 17/11/2025 18:00

View update

A487 : Northbound : Felinheli Bypass : Maintenance work : Road closed : Diversions in place : 12/11/25-13/11/25 2000-0200 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 8 months 3 weeks ago

Started Start time TBC Ended 13 Nov 2025, 02:05

Description: A487 : Northbound : Felinheli Bypass : Maintenance work : Road closed : Diversions in place : 12/11/25-13/11/25 2000-0200 :, Start time: 12/11/2025 20:00 , End Date: 13/11/2025 2:00, Severity: Road closure, Source: Welsh Government, Last updated: 12/11/2025 20:00

View update

A487 : Southbound : Felinheli Bypass : Maintenance work : Road closed : Diversions in place : 11/11/25-12/11/25 2000-0200 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 8 months 3 weeks ago

Started Start time TBC Ended 12 Nov 2025, 02:05

Description: A487 : Southbound : Felinheli Bypass : Maintenance work : Road closed : Diversions in place : 11/11/25-12/11/25 2000-0200 :, Start time: 11/11/2025 20:00 , End Date: 12/11/2025 2:00, Severity: Road closure, Source: Welsh Government, Last updated: 11/11/2025 20:00

View update

A55 : Eastbound : J10 Caernarfon Road : onslip : Cyclic maintenance : Closed : Diversions in place : 07/11/25-08/11/25 1900-0600 :

Cleared Roadworks Traffic Wales
Isle Of Anglesey

Cleared 8 months 3 weeks ago

Started Start time TBC Ended 8 Nov 2025, 06:05

Description: A55 : Eastbound : J10 Caernarfon Road : onslip : Cyclic maintenance : Closed : Diversions in place : 07/11/25-08/11/25 1900-0600 :, Start time: 07/11/2025 19:00 , End Date: 08/11/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 07/11/2025 19:00

View update

Looking for live updates?

Return to the live incident feed for in-progress closures, or combine archive trends with CrashView reports to brief stakeholders.