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►N17 / R320 Lisduff Junction Upgrade


The route corridors shown on this map are for general location purposes only.

They are approximate and do not represent the actual design.

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A section of the N17 National Primary Road between the junction with the R320 Regional Road at Lisduff and the junction with the N60 National Secondary Road at Clare immediately east of Claremorris town has been identified by Transport Infrastructure Ireland (TII) as a High Collision Location (HCL) in accordance with TII’s HD 15 Safety Ranking Assessment. Arising from the TII Assessment it was decided to undertake upgrade works to improve the junction at Lisduff. Funding for the N17 / R320 Lisduff Junction Upgrade project was allocated by TII under HD15 and HD17 Minor Works on National Roads and planning and design for the project commenced in 2018.

The project will comprise the upgrade of the existing at-grade junction of the N17 National Primary Road and the R320 Regional Road, south east of Claremorris to a compact grade separated junction. The proposed new junction layout will eliminate right turning traffic movements at the junctions with the N17 and will provide left in/ left out traffic turning movements only with the N17.


The proposed development, which is located in the townlands of Clare (E.D Claremorris) and Lisduff (E.D. Ballindine), County Mayo, will consist of the following proposed elements: –
• Realignment of existing N17 West junction with R320 Regional Road to form a compact connector road
• Provision of N17 East junction with compact connector road to proposed eastern roundabout
• Provision of 0.31 km link road including overbridge between existing R320 regional road and proposed eastern roundabout
• Provision of 0.54 km link to L-5565-0 existing Meelick More Road
• Overbridge structure to be constructed over the existing N17 to carry the proposed R320 Link
• Provide 2 no. roundabouts on existing R320 regional road (western roundabout) and at junction of N17 East compact connector, L-5565-0 Link and R320 Link (eastern roundabout)
• Provide local collector road for properties on north side of L-5565-0 Meelick More Road with one junction on realigned L-5565-0
• Closure of the existing N17/L-5565-0 Meelick More Road junction
• Drainage including the provision of culverts where necessary and incorporating Sustainable Drainage Systems (SuDS)
• Earthworks
• Roadworks, road pavement, traffic signage, and road markings
• Access and Accommodation Works
• Ancillary Road Works
• Utility Diversions
• Provision of public lighting at the 2 roundabout junctions
• Traffic Management.


In accordance with Part XI, Section 179 of the Planning and Development Act 2000, the Planning and Development Acts 2000 – 2019, Part 8 of the Planning & Development Regulations 2001, as amended, and the Planning & Development Regulations 2001 – 2019, Mayo County Council published a public notice of the proposed development in the Western People on 14th October 2019

After a period of public consultation, during which submissions and observations with respect to the proposed development were invited from members of the public, a Report was prepared and presented to the Elected Members at the Claremorris Swinford Municipal District Meeting of Wednesday 5th February 2020. The Elected Members considered the proposed development and resolved to approve the proposed development without modification.



In accordance with Article 6(3) of the Habitats Directive, Appropriate Assessment Screening was undertaken by Barry Transportation Consulting Engineers to determine if Stage 2 Appropriate Assessment was required for the proposed development.

Mayo County Council, having considered the Appropriate Assessment Screening Report, has concluded that there are no Natura 2000 sites at risk from any direct or indirect impact arising from the project, and therefore, no requirement to proceed to Stage 2 Appropriate Assessment.

Appropriate Assessment (AA) Screening Report

Appropriate Assessment (AA) Screening – MCC Conclusion Statement



Environmental Impact Assessment (EIA) Screening to determine whether an EIA is required for a proposed development is set out in the mandatory and discretionary provisions of the Planning and Development Act, 2000 (as amended) (the Act) and in Schedule 5 of the Planning and Development Regulations, 2001 as amended (the Regulations).

Barry Transportation Consulting Engineers have undertaken an EIA screening exercise in relation to the proposed development on behalf of Mayo County Council.

The Environmental Impact Assessment (EIA) Screening Report concluded that the proposed road development would not be likely to have significant effects on the environment.

Mayo County Council having considered the EIA Screening Report has determined that the N17 / R320 Lisduff Junction Upgrade Project does not require an Environmental Impact Assessment.

Environmental Impact Assessment (EIA) Screening Report

Environmental Impact Assessment (EIA) Screening – MCC Determination


Following approval of the proposed development Mayo County Council have on the 16th June 2020 made a Compulsory Purchase Order to acquire the land for the project.

The Council published the Compulsory Purchase Order (CPO) for the N17 / R320 Lisduff Junction Upgrade in The Connaught Telegraph edition of 23rd of June 2020.

Please click on the following links to view the published information.

CPO Notice Published in The Connaught Telegraph
Compulsory Purchase Order (CPO) & Schedule
CPO Deposit Map

For further information please contact:

John Gallagher,
Executive Engineer,
Mayo National Roads Office,
Glenparke House,
The Mall,
County Mayo

Phone: (094) 906 4330
E-mail: jgallagher@regdesign.com

Opening hours are from 9 a.m. to 1 p.m. and from 2 p.m. to 5:30 p.m., Monday to Friday. Click here  to view a map showing the office location.

Engineers Ireland Department Of Transport Mayo County Council National Roads Design