Traffic and Roadworks Update: 19 to 25 September 2026

Road users in Dún Laoghaire-Rathdown are advised to plan ahead this week. Several road closures, roadworks and temporary traffic arrangements will be in place across the county between Saturday, 19 September and Friday, 25 September 2026. Information is correct as of 4pm on Thursday, 17 September 2026. Emergency works cannot be forecast. 

Wyattville Link Road speed limit

A temporary 50 km/h speed limit remains in place on the westbound Wyattville Link Road between Cherrywood Avenue and the Cherrywood M50 southbound slip road.

The reduced speed limit is required to facilitate construction of the Wyattville Link Road underpass as part of the Beckett Link Road Project. It will remain in place until 30 November 2026, or until the works are completed, whichever is earlier. 

Proposed road closures

Dublin Marathon route

The Council has received an application from the Dublin Marathon Group to temporarily close sections of:

• Clonskeagh Road
• Roebuck Road
• Foster's Avenue
• R138 Stillorgan Road (north of Foster's Avenue)
• UCD Flyover to the Dublin City boundary

The closures are proposed for Sunday, 25 October 2026, from 9.20am to 4.30pm, to facilitate the Irish Life Dublin Marathon.

Observations or objections should be submitted before 12 noon on 7 October 2026. 

Brides Glen Road, Shankill

An application has been received to extend the temporary closure of Brides Glen Road between Rathmichael Road and Mullinastill Road from 26 September to 28 November 2026.

The closure is required to facilitate the installation of a new large diameter watermain. Diversion routes will be clearly signposted.

Observations or objections should be submitted before 12 noon on 22 September 2026. 

Silchester Road, Glenageary

An application has been received to temporarily close a small section of Silchester Road at its junction with Silchester Crescent on 9 October 2026, between 10am and 4pm.

The closure is required for permanent reinstatement works. Pedestrian and local access will be maintained and diversion routes will be signposted.

Observations or objections should be submitted before 12 noon on 23 September 2026. 

Current road closures and traffic arrangements

Killiney Hill Road

Killiney Hill Road will be temporarily closed between Victoria Road and Military Road from 29 September to 1 October 2026, between 8am and 6pm daily.

The closure is required for gas works. Pedestrian and local access will be maintained and diversion routes will be signposted. 

Mounttown Road Lower, Dún Laoghaire

A temporary one-way system remains in place on Mounttown Road Lower.

Traffic can travel northbound only between Kill Avenue and York Road. Southbound traffic should follow the signposted diversion routes.

The arrangement is required for the Dún Laoghaire Central Active Travel Scheme and is expected to remain in place until the end of October 2026. 

Longer-term closures and traffic arrangements

The following closures and traffic arrangements remain in place:

• Brides Glen Road, Shankill: Closed until 26 September 2026 for installation of a new watermain.
• Wyattville Link Road westbound: Temporary traffic arrangements remain in place until 30 November 2026.
• Glenamuck Road, Carrickmines: Closed between Brambledown and the Enniskerry Road junction.
• Barnaslingan Lane: Permanently closed to through traffic. Pedestrian and cyclist access remains available. 

Main roadworks and lane restrictions

Traffic management measures, including temporary traffic lights, Stop/Go systems, lane restrictions and local diversions, may be in place at the following locations:

Major works this week

• Camberley Oaks, Dundrum: New pedestrian crossing and speed ramp works (21 September to 2 October).
• Enniskerry Road at Struan Glen: Uisce Éireann infrastructure works continuing until 25 September.
• Clonkeen Crescent and Clonkeen Grove, Deansgrange: Footpath maintenance works.
• Ashlawn Park, Loughlinstown: Road resurfacing and footpath maintenance works until 9 October.
• Dundrum Road/Shanacoumha Cul-de-Sac: ESB trenching and ducting works throughout the week.
• Sydney Avenue/George's Avenue/Frascati Park, Blackrock: Rehabilitation works throughout the week. 

Utility and reinstatement works

Works are scheduled at locations including:

• Blackrock
• Dalkey
• Glenageary
• Monkstown
• Dún Laoghaire
• Foxrock
• Killiney
• Clonskeagh
• Roebuck
• Windy Arbour
• Kilmacud

Temporary traffic management arrangements may apply. 

Ongoing major works

Galloping Green, Stillorgan

ESB ducting works associated with the Kingscroft Development are continuing.

The bus lane, cycle lane and adjacent grass verge remain closed. The existing footpath remains open to pedestrians.

Works are expected to continue for approximately five to six weeks. 

Active Travel project updates

Dún Laoghaire Central Active Travel Scheme

The temporary one-way system on Mounttown Road Lower remains in place, with traffic travelling northbound only between Kill Avenue and York Road.

The scheme is expected to be fully completed and operational by the end of October 2026. 

Dodder Greenway – Ely's Arch Project

Works continue at the Orwell Road/Braemor Park junction and the Orwell Road/Dodder Road Lower junction.

Dodder Road Lower is now permanently one-way westbound from Orwell Road towards Ely's Arch. Traffic management measures and diversions remain in place where necessary.

New two-way cycle lanes on Dodder Road Lower are expected to partially open during autumn 2026. 

Safe Routes to School updates

Major construction works have now been substantially completed at:

• Holy Cross National School, Dundrum
• Carysfort National School, Blackrock
• Holy Family National School, Monkstown
• The Harold School, Eden Road Lower and Harold Crescent

Only minor snagging works remain at these locations and minimal disruption is expected. Temporary traffic management may still be required while final works are completed. 

Proposed pedestrian crossing at Cornelscourt

The Council is proposing a signal-controlled pedestrian crossing at the N11 Cornelscourt junction.

The project includes upgrades to traffic signals, road markings, footpaths, kerbing, tactile paving and signage. The crossing is intended to improve accessibility and safety for pedestrians and cyclists while supporting access to public transport services. 

Please allow extra time when travelling through affected areas and follow temporary signs and traffic management instructions.

Information on planned roadworks on the M50 is available from M50 Concession Limited.

Information on planned works along the M50, N11 and M11 is available at:
👉https://m50concession.com/operation-maintenance/planned-road-works/