The tender process for the main works is ongoing with the main construction contract currently scheduled to be awarded before the end of 2020. It is anticipated that sectional openings will take place from 2022, with final construction completion being reached in 2023. Overall, this pushes the completion date back by 12 months.
Regular updates are issued in relation to progress on the Dunkettle Interchange Upgrade Scheme and other National Primary Road schemes in the general Cork area. These updates will continue to be issued as we progress through the advance works and main construction phases.
(Sign up at: https://www.dunkettle.ie/newslettersignup).

The specified time period for construction of the works is 3 years from the confirmed start date.

We are currently progressing a number of significant Dunkettle Interchange Advance Works items which may have the potential to provide benefits to the overall programme and/or shorter term benefits to commuters. These advance works include:

  • The construction of the link road taking traffic from the N8 (Lower Glanmire Road Outbound from Cork City) to the M8 (Dublin Motorway Northbound). This link will bypass the existing Dunkettle Interchange entirely. This link will bypass the existing Dunkettle Interchange entirely and is likely to be open to traffic early in the construction phase for the main construction contract. Taking this traffic movement out of the interchange entirely will provide benefits not only to those using this route, but to all road users of the interchange by reducing the total volume of traffic to be accommodated through the interchange roundabout.
  •  Construction of a shared use cycle/pedestrian route adjacent to the N8 to M8 Cork to Dublin road link. This will be a segregated route, separated from the road link by noise/environmental barriers, as well as vehicle restraint barriers. The Dunkettle area is a critical node in the delivery of the Cork Cycle Network Plan by both Cork County Council and Cork City Council. This section of the route will be delivered as part of the Dunkettle Interchange Advance Works and will connect the City to the new cycleways for the Glounthaune Road, and the Richmond Road proposed by Cork City Council.
  •  Construction of the new pedestrian and cycle rail overbridge near Burys Bridge.
  •  Works to the major utilities crossing the Dunkettle Interchange site. These include gas, electricity, fibre optic telecoms and trunk watermains serving Cork City, Little Island and Cobh. Protection works and diversion works to these vital services within the new services corridor developed during the Stage 1 design process will significantly de-risk the main construction works and reduce the construction programme.
  •  Works on a new roundabout on the Little Island Regional Road R623.


Journey times will depend on the phase of the works as well as the time of day. With up to 130,000 vehicles travelling via the Dunkettle Interchange daily, a range of measures such as roadside journey-time signs and communication channels have been developed with real-time journey information and live-streamed footage of traffic flows at various parts of the road network now available via the Dunkettle Live app and the Dunkettle traffic website www.dunkettletraffic.ie to assist commuters and the travelling public to plan their journeys to minimise delays.

The traffic app Dunkettle Live is available as a free download on the Google Play store and the Apple App store .
Refer to Question 10 below for further details.

Yes. The planning and sequencing of the works will at all times prioritise maintaining traffic flows as much as possible but traffic disruption will be unavoidable at times.

In addition to keeping the travelling public informed through weekly newsletters and via the Dunkettle Traffic website and Dunkettle Live App, impacts will be minimised on the travelling public and commuters by:

  • working ‘from the outside in’, opening up new links on a phased basis and steadily reducing traffic volumes on the existing Dunkettle interchange itself.
  • running lanes being kept available during peak times. However, there will be times when the hard shoulder areas will need to be closed.
  • bridge lifts, and other disruptive works, being completed under night-time and weekend working arrangements.
  • a regular Traffic Management Forum co-ordinating Dunkettle Traffic Management with other projects and An Garda Síochána to minimise impacts on the travelling public.

Yes, there will be road closures required for specific elements of works which will be primarily restricted to night-time. For any planned road closures there will be advance notice to road users, with traffic management in place for any road closure diversions.

There will be some night-time construction works for specific tasks such as installation of traffic management, bridge lifts, resurfacing etc. in order to maintain the existing Dunkettle interchange and railway line to the travelling public during the construction phase.

During construction works, there will be times when Jack Lynch Tunnel closures coincide with Dunkettle works and road users will be notified in advance through roadside signage and Dunkettle progress updates via the weekly newsletter and the Dunkettle project website https://www.dunkettle.ie

Normal working hours on site are

Day Time
Monday to Friday 07.00 to 19.00 hrs
Saturday 08.00 to 16.30 hrs
There will be some unavoidable night-time construction works and weekend works where necessary for specific tasks such as installation of traffic management, bridge lifts, resurfacing etc. in order to maintain the existing Dunkettle interchange and railway line to the travelling public during the construction phase.

The recent installation of Intelligent Transport Systems (ITS) across the N40 and Easter holiday weekend works in April 2019 at Little Island Interchange demonstrated the success of this approach where works were completed on schedule by the Contractor under night-time and weekend closures respectively.

On commencement of the main Dunkettle Interchange construction works, there will be a free recovery vehicle should you break down. A phone number for a dedicated local vehicle recovery service will be provided on the Dunkettle Live app and the Dunkettle Traffic website (www.dunkettletraffic.ie).

In the interim, please contact the Motorway Incident Line on 0818 715 100.

  • The traffic app Dunkettle Live is available as a free download on the Google Play store and the Apple App store
  • A short video demonstrating the functionality of the app can be viewed here:
    Dunkettle Live App Preview.
  • Dunkettle Live was developed in advance of the main construction works, and launched in early December 2019, to provide motorists with real-time traffic information accompanied by live video streaming from the main approaches to the Dunkettle Interchange and live journey times through the junction, to and from all of the major routes: M8, N40, N25, N8.
  • It is hoped that this information may assist the travelling public and commuters with flexible working arrangements to re-schedule their journeys through the interchange to avoid peak traffic periods as people become increasingly aware of the free availability of real time traffic information on all approaches to the Dunkettle Interchange.
  • We would welcome any comments in relation to the app to [email protected].

As always, if there are any queries or comments in relation to the Dunkettle works, please contact us on the freephone number 1800 810077 (at any time - available 24 hours a day, 7 days a week) or by email: [email protected]


We would also encourage members of the public to visit the display room in the Dunkettle site office where the 3D model of the completed Dunkettle Interchange is available to view.

The site office is located at Inchera, Little Island and we would be happy to answer any queries between 08.00 to 17.00 hrs.
There is a freephone number 1800 810077 available 24 hours a day, 7 days a week.
A display room is maintained on site with a 3D model of the completed Dunkettle Interchange and a range of other relevant information.
All are welcome to arrange a visit.

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