N25 New Ross Bypass

Co. Kilkenny - Co. Wexford, Ireland
Investing in South East Ireland’s Landmark Road Structure that holds the record for the longest concrete extradosed span in the world
26th January 2016 Financial Close
4 years Construction Period
25 years Concession Period
2045 Handback
N25 New Ross Bypass

The background

Major road infrastructure investment in Ireland’s South-East region was required to relieve chronic traffic congestion and future proof the region’s economy. In 2013, Transport Infrastructure Ireland (TII) launched a road infrastructure PPP programme to tackle existing bottlenecks and address significant traffic delays. 

Commuters travelling through New Ross and the surrounding area faced delays of up to 30 minutes, which caused major disruption to the transportation of goods and services to the local communities. The N25 New Ross Bypass, that forms part of the Trans-European Network-Transport (TEN-T) was delivered to reduce journey times and improve the quality of life for those within the surrounding areas.  

The N25 New Ross Bypass was perceived to be an incredibly complex project due to its design brief and construction requirements. Therefore, a trusted partner who had a strong presence in the Irish market and extensive road infrastructure experience was required. TII awarded N25 New Ross Bypass DAC – an Invesis and Iridium Concesiones de Infraestructuras S.A. joint venture – the PPP contract to successfully design, build, finance and maintain (DBFM) the key transport link in 2014.  

Due to the lifecycle approach of the PPP model and excellent relationships formed between the joint venture and the client, the N25 New Ross Bypass is now a high quality, fully operational asset, that has substantially improved journey times for commuters. 


TII (Transport Infrastructure Ireland)

Capital Value



Invesis and Iridium Concessionaires de Infrastructure S.A.


N25 New Ross Bypass DAC

Engineering, Procurement and Construction (EPC)

BAM Civil Ltd and Dragados Ireland Ltd

Operations and Maintenance (O&M)

BAM Civil Ltd and Iridium Concessionaires de Infrastructure S.A

Business value

The N25 New Ross Bypass landmark structure landmark structure – the Rose Fitzgerald Kennedy Bridge – holds the record for the longest concrete extradosed bridge in the world.

The bridge was designed following stringent Eurocodes and the Irish National Annexes. Invesis and Iridium Concesiones de Infraestructuras S.A worked collaboratively with the client, designers, and our selected development partners to meet guidelines whilst ensuring the design of the project aligned with the client’s costs and brief.  

Through fostering collaborative relationships with multiple external parties and the client, Invesis were able to support TII in delivering a vital piece of infrastructure that is enhancing local communities, improving road safety and supporting the future economic growth of Ireland.  


Key features

By using the PPP contract approach and partnering with N25 New Ross Bypass DAC the project 

  • created 600 jobs for people within the local community throughout the construction phase  
  • will save commuters up to 45 minutes of journey time  
  • has won multiple awards including;
      • the “Civil Engineering” award category at the 2022 fib Awards for Outstanding Concrete structures
      • the prestigious IABSE (International Association for Bridge and Structural Engineering) Outstanding Structure Award in 2021
      • Silver for Best Road Project at the 2017 Partnerships Awards
      • the European Project Bond Award at the 2017 IJ Global Awards