The closures are for tree safety works by the National Parks and Wildlife Service, in partnership with TII.
Wicklow commuters are being warned of ongoing overnight disruption on the N11, with road closures in place for the next three weeks.
A stretch of the N11 dual carriageway between Junction 7 Bray South and Junction 11 Kilpedder will close nightly, Monday to Friday, from 9pm to 6am from Tuesday, February 3rd until Friday, February 23rd.
The closures are to allow tree safety works to be carried out by the National Parks and Wildlife Service, in partnership with Transport Infrastructure Ireland.
Motorists travelling late in the evening or early morning are being advised to plan ahead, as diversions and delays are expected.
Those commuting to and from Bray, Greystones, Kilcoole and surrounding areas are likely to be impacted.
The works involve the removal of trees identified as posing a safety risk to road users, including ash trees affected by ash dieback and several non-native species. Additional trimming and crown reduction will also take place.
The NPWS says the works are necessary to improve road safety and protect the native woodland at the Glen of the Downs Nature Reserve.
Drivers are urged to allow extra time for journeys and to check traffic updates before travelling.
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