Upcoming road closures and traffic diversions across Dún Laoghaire

Dún Laoghaire-Rathdown County Council has confirmed a series of scheduled roadworks and traffic management updates affecting the region between 26 September and 2 October 2026. Significant infrastructure projects, including Uisce Éireann watermain installations and the Beckett Link Road construction, continue to necessitate long-term closures on Bride's Glen Road and the Wyattville Link Road respectively. Furthermore, a temporary one-way system remains in operation on Mounttown Road Lower as part of the ongoing Dún Laoghaire Central Active Travel Scheme, which is currently scheduled to conclude at the end of October.

Short-term disruptions are expected throughout the week due to essential gas network maintenance and road rehabilitation efforts. Killiney Hill Road will be closed to traffic between Victoria Road and Military Road from 29 September to 1 October, while rehabilitation works are set to impact Sydney Avenue, George's Avenue, and Frascati Park Road. Additionally, residents should prepare for localised traffic management, including Stop/Go systems and road narrowing, during reinstatement works on Sandyford Road, Mulvey Park, and various other sites. Smart sign pole installations will also be carried out on Cumberland Street, York Road, and Clarence Street during daytime hours.

For those planning travel for the upcoming Irish Life Dublin Marathon, the Council has invited public observations regarding proposed temporary road closures for the event, with submissions accepted until 7 October. All road users are encouraged to remain vigilant, adhere to posted diversion signage, and monitor the official Dún Laoghaire-Rathdown County Council website for real-time updates on active travel schemes and potential emergency works that may arise throughout the week.