N4-N15 Sligo Urban Improvement Scheme

Project Update – November 2019

SUMMARY

Construction works on behalf of Sligo County Council are currently ongoing by Fox Building & Engineering Ltd. on the N4-N15 Sligo Urban Improvement Scheme.

This scheme consists of the upgrade of the existing N4-N15 urban dual carriageway from just north of Hughes Bridge to just north of the R291 Rosses Point Road junction.  The scheme, which is funded by Transport Infrastructure Ireland (TII), also includes the installation of state of the art traffic signal technology as part of the provision of an Intelligent Transport System (ITS) along the Inner Relief Road to optimise traffic flows through the junctions.

The main civil engineering works will include the upgrading of 730m of the existing N4-N15 dual carriageway, northwards from Hughes Bridge, to two straight-on lanes in each direction, and longer stacking lanes at all three junctions.  These junctions include the R870 Markievicz Road junction, the N16 Duck Street junction, and the R291 Rosses Point Road junction.  The Rosses Point Road junction will be converted to a T-Junction.

A total of 13 junctions along the Inner Relief Road and the adjacent Local/Regional Road network will be upgraded to an Urban Traffic Control System.  This will incorporate the latest advances in traffic signal and fibre-optic communication technology, which will future proof the communication network as part of Sligo County Council’s ‘Smart City’ initiative.

This Traffic Management Scheme will also assist in meeting Sligo County Council’s Smarter Travel and Sustainable Transport objectives with the provision of facilities for pedestrians and cyclists in both directions, north and south.

For latest information pertaining to necessary Traffic Management measures in place as part of the N4-N15 scheme please refer to the Sligo County Council Roads Report, which is available through the following link: http://www.sligococo.ie/PublicNotices/

N4-N15 Aerial View Aerial view of N4-N15 Sligo Urban Improvement Scheme post completion of works
N4-N15 Scheme Drawing N4-N15 Scheme Drawing
N4-N15 Scheme Drawing (PDF) - 2,008 kbs  PDF

How does the Intelligent Transport System work?

The Intelligent Transportation System (ITS) will use real-time data from vehicle detectors to enable the traffic signals speak to each other and make ‘intelligent’ decisions, which will optimise traffic flow.  The aim is to make the road network as safe and efficient as possible.

Benefits:

  • This ITS investment will improve safety, offer consistency in travel times and reduce congestion that will allow for fuel efficiency, as well as reduce air pollution.
  • The system will also have the capacity to allow for Emergency Vehicle green waves and the potential for public transport priority.
JunctionUpgradeMap_Nov2019 Location of 13 Junctions which will be upgraded as part of UTC System

Background and Details of Site Works

The main civil engineering works will include the upgrading of 730m of the existing N4-N15 dual carriageway, northwards from Hughes Bridge, to two straight on lanes in each direction, and longer stacking lanes at all three junctions.  These junctions include the R870 Markievicz Road junction, the N16 Duck Street junction, and the R291 Rosses Point Road junction.  The Rosses Point Road junction will be converted to a T-Junction.

Works also include improvements to the open space at the Rosses Point Road/N15 junction, which will approximately double in size.  The scheme will repair the masonry arch section of the Copper River Culvert under the Rosses Point Road as well as replace and widen the upstream culvert crossing the N15.  The construction of six retaining walls, the provision of drainage systems, various utilities works, earthworks, pavement construction, boundary treatment, landscaping, street lighting, the provision of enhanced footways and cycle-ways as well as the installation of the Urban Traffic Control System all form part on the works to be constructed.

The scheme also includes the provision of some key Irish Water capital Infrastructure including:

  • 2 No. 600mm diameter trunk sewer sleeves crossing N15
  • Strategic watermain link between N4/N16 Junction and Ballast Quay
  • Provision of twin rising main from N15/R291 Junction to Ballast Quay

Project Timeline to date

Key dates in the project timeline are as follows:

  • Design commenced early 2016
  • Scheme submitted to An Bord Pleanála June 2017 including submission of:
    • Natura Impact Statement
    • CPO documents
  • Oral Hearing for the scheme held in November 2017
  • Scheme received statutory approval from An Bord Pleanála in February 2018
  • June 2018 – commenced 1st stage of restricted tender process in accordance with EU and Irish Procurement Legislation – Suitability Assessment Questionnaire
  • January 2019 – Tenders issued to 5 No. shortlisted contractors
  • Tenders received – March 2019
  • Contract Award – 31st July 2019
  • Commencement of Works - 27th August 2019
  • Works are anticipated to be completed by Autumn 2020.

Construction Contract Award and Associated Parties

The construction contract for the scheme was awarded to Fox Building & Engineering Ltd (FBEL) on 31st July 2019.

Overall, the project is being managed by Sligo County Council’s National Roads Project Office Sligo PO), assisted by the following parties:

  • Employers Representative and Designer – Jacobs Engineering Ireland Ltd
  • Sligo County Council Site Residential Engineering Team
  • Environmental Assurance Officer – Woodrow Sustainable Solutions

Current Works Status (November 2019):

Mobilisation Works for the scheme commenced on site on 27th August 2019.  The first phase of the works is focused predominantly in the vicinity of the N15/R291 junction and will be ongoing between now and Christmas.  These works include:

  • Site Clearance Works
  • Set up of Site Compound
  • Environmental/Archaeological Surveys, Controls & Other Requirements
  • Copper River Culvert – (Structure 04)
  • Retaining Walls (Structure 05 and 06)
  • Attenuation Treatment Pond
  • Modification of N15/R291 Junction Layout
  • Drainage and Service crossing of N15

Traffic Management

Due to the location of the works on the N4-N15 urban dual carriageway, significant Traffic Management Arrangements will be required during the construction stage including management of pedestrians.

For latest information pertaining to necessary Traffic Management measures in place as part of the N4-N15 scheme please refer to the Sligo County Council Roads Report, which is available through the following link: http://www.sligococo.ie/PublicNotices/

Communication

Fox Building & Engineering Ltd have appointed a Public Liaison Officer for the works who can be contacted at 087 9368681.

Further information in relation to the scheme can be sought from Sligo County Council at:

Sligo National Roads Project Office,
Sligo County Council,
Business Centre,
Market Yard,
Sligo,
F91 WV7R.

Telephone: 071 9111975 & 071 9111982

Email: n4n15@sligococo.ie

 

N4-N15 Project Update - March 2018

N4-N15 Newspaper Notices

N4-N15 Documents