Growth and Development Programme - Crodaun Wastewater Network Upgrade

In progress:

Section 3 (R405, Maynooth Road, between Castletown Drive and Aghards Road)

Works on Section 3 are progressing well and nearing completion. There is approx. 350m of the 445m complete under the current temporary road closure. Works are expected to be completed by mid-June.

Planned:

Section 4 (Aghards Road to Stream Crossing)

• Section 4 works will take place from Aghards Road to the stream crossing at Crodaun Forest Park south entrance.
• Works are expected to take place from 15 June to 28 August.
• This is not a continuous full road closure for three months.
• The majority of the works will take place under a lane closure, with stop/go traffic management in place, keeping one lane open.
• There will be a requirement to close the road intermittently. These road closures will take place over two weekends and these dates will be communicated a week in advance. Section 5 will be lane closure only. One footpath will be open at all times to pedestrians, with crossing points managed by flagmen.
• Alternative diversion routes will be clearly signposted.

Section 5 (Stream Crossing):

• Section 5 works will take place from the stream crossing at the Crodaun Forest Park south entrance, from 22 June to 06 July.
• These works have been brought forward to take place during the school holidays and minimise impact to the local community.
• This will be completed under a lane closure.
• The Maynooth Road / Crodaun Forest Park junction will be controlled / monitored by flagmen.
• Uisce Éireann also wishes to clarify that there will be no temporary bridge constructed in the Crodaun Forest Park area and that access to the estate will be maintained throughout the works.

Progress on Section 3 (R405, Maynooth Road, between Castletown Drive and Aghards Road)

Works on Section 3 are progressing well and nearing completion. There is approx. 350m of the 445m complete under the current temporary road closure.

Plans for Sections 4 and 5

Section 4 (R405 Aghards Road to Stream Crossing) is the next phase of works and is scheduled to begin in mid-June 2026. To facilitate these works, Kildare County Council has issued a Notice of Intention for intermittent temporary closures on the R405 Maynooth Road (from Aghards Road junction to the Crodaun Forest Park south entrance) between Monday, 22 June to Friday, 25 September 2026.

*Important clarification on the Section 4 closure notice*:

• This is not a continuous full road closure for three months. Closures will be intermittent only (max 1 - 3 days each) during this three-month period. The current plan is to complete these works with two block closures (3 day and 2 day). To minimise disruption where a closure is in place for 3 days it will be implemented over a weekend (3 days Friday - Sunday, 24/7). If a one- or two-day closure is in place it will be planned to accommodate peak traffic.
• Traffic will use a stop/go lane closure system, keeping one lane open at all times outside of the intermittent closure periods mentioned above.
• Specific closure dates will be notified in advance via signage, through a communications update and on our website a week before the closure is implemented.
• Pedestrian access will be maintained at all times, with one footpath remaining open where works are taking place.
• Alternative diversion routes will be clearly signposted.

Section 5 (Stream Crossing) works were initially planned for September. This is now re-sequenced to commence late June following stakeholder engagement and requests to complete works during the summer period. This will be completed under a lane closure (outside of the intermittent full closures) and the Maynooth Road / Crodaun Forest Park junction will be controlled / monitored by flagmen. Uisce Éireann also wishes to clarify that there will be no temporary bridge constructed in the Crodaun Forest Park area and that access to the estate will be maintained throughout the works.

Diversion details (Section 3)

Please see the following maps and below description for further information on traffic management plans and diversion routes:

Northbound on R405:

• When you reach the Shackleton Road junction, take a left onto Shackleton Road towards Tesco.
• Continue on Shackleton Road for 450 metres until you reach the Aghards Road junction.
• Take a right onto Aghards Road and continue for 1 kilometre until you reach the R405 junction.
• Take a left onto the R405 where the diversion ends.

Southbound on R405:

• When you reach the Aghards Road junction, take a right onto Aghards Road towards Shackelton Road.
• Continue on Aghards Road for 1 kilometre until you reach the Shackleton Road junction and take a left onto Shackleton Road.
• Continue on Shackleton Road for 450 metres until you reach the R405 where the diversion ends.
• Diversion routes will be clearly signposted, as agreed with the Council and An Garda Síochána. Emergency access and restricted local access will be maintained.

Upcoming Exams

• Planned works are on the approach roads to the schools, with coordination in place during the exam period.
• Coffey is liaising with Scoil Mochua Celbridge, Celbridge Community School, Salesians Celbridge, Scoil na Mainistreach, St Wolstan’s and North Kildare Educate Together.
• Coffey has also contacted local secondary schools directly to assure them that disruption for Leaving Cert and Junior Cert students will be minimised.
• Traffic will be monitored closely during the exam period and traffic management adjusted day by day, particularly at school start and finish times, to prioritise safe access for students attending exams.

Section 1: Castletown Estate - Ongoing

Works at Castletown Estate commenced on 27 April and will run for approx. 6 weeks. The works involve upgrades to the local wastewater network and do not include changes to the existing pumping station. 

Section 2: Castletown Drive – Complete 

Works on Section 2 (Castletown Drive) are complete, and the road was reopened as of 21 April. Over 805 m of pipe has been installed.

Works at Castletown Estate

Works at Castletown Estate are scheduled to commence on Monday, 27 April 2026 and will run for approx. 6 weeks. The works involve upgrades to the local wastewater network and do not include changes to the existing pumping station.

The upgrades are as follows:

• Installation of 6 new manholes
• Construction of 337 metres of new sewer pipe along the River Liffey
• Connection to existing infrastructure outside the pumping station
• During construction, the riverside walkway will be temporarily closed and secured with hoarding to prevent public access. The path will be fully reinstated upon completion.

All works will be carried out under the supervision of a site ecologist to ensure environmental protection.

The R405, Maynooth Road, Celbridge, between Castletown Drive (north) and Aghards Road (north) will be closed from Monday, 20 April until 13 July 2026 to safely facilitate pipelaying works.

Please see the following maps and below description for further information on traffic management plans and diversion routes:

Northbound on R405:

• When you reach the Shackleton Road junction, take a left onto Shackleton Road towards Tesco.
• Continue on Shackleton Road for 450 metres until you reach the Aghards Road junction.
• Take a right onto Aghards Road and continue for 1 kilometre until you reach the R405 junction.
• Take a left onto the R405 where the diversion ends.

Southbound on R405:

• When you reach the Aghards Road junction, take a right onto Aghards Road towards Shackelton Road.
• Continue on Aghards Road for 1 kilometre until you reach the Shackleton Road junction and take a left onto Shackleton Road.
• Continue on Shackleton Road for 450 metres until you reach the R405 where the diversion ends.
• Diversion routes will be clearly signposted, as agreed with the Council and An Garda Síochána. Emergency access and restricted local access will be maintained.