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Traffic Wales information line 0300 123 1213
The Welsh Government's
traffic information service

A40 Gibraltar Hill Tunnels Monmouth - Planned Maintenance Works


Where and Why

A contraflow arrangement will be installed on the A40 Gibraltar Tunnels, Monmouth to carry out essential maintenance works in both the northbound and southbound tunnel bores.

The contraflow will be in place from 2000hrs on Saturday 11th October 2019 until 0600hrs on Wednesday 16th October 2019.

Safety Measures

During the entire closure period all wide abnormal load ( Width less than 3 meters and length no more than 16.5 meters) will be requested to use the M5 & M4 to enter and exit South Wales.

Electronic and Hard advance signage will be utilised on the M4, A465,A40  and the A449 where possible to advise motorist to “Plan Ahead, Delays Expected, Monmouth” during these dates.

Highways England will also been contacted and advised, if possible, to set signs on the M5 south bound, more especially for wide/abnormal loads heading into South Wales.

Further information.

For further information, please contact South Wales Trunk Road Agent (SWTRA) on 0300 123 1213 or via Twitter @TrafficWalesS.

Call the Traffic Wales information line
0300 123 1213
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