M11 Gorey to Enniscorthy Motorway Project

Major progress has been made at the new €350 million M11 Gorey to Enniscorthy motorway project. The public-private partnership project (PPP) involves the design, construction, financing, operation and maintenance of 32.1km of the M11 motorway, a section N80 dual carriageway and a further 8.0km of the N30 single carriageway. The design and construct element is being carried out Bam Civil Ltd and Dragados in joint venture.

The M11 Gorey to Enniscorthy Scheme will provide a high-quality safe link within the South East region and ease congestion by bypassing Ferns, Camolin and Enniscorthy. The main structural feature of the scheme will be a crossing of the River Slaney combined with an adjacent crossing of the Dublin-Rosslare railway line. The new road will be operational in August 2019, followed by a 25 year concession period for the consortium.

The scheme comprises of a new motorway from the end of the Gorey Bypass at Clogh to the townland of Scurlockbush, south of Enniscorthy. Other features of the new scheme will consist of the following:

• A new, all movements grade separated junction in Frankfort, with tie-ins to the existing M11 and new access roads.
• A new all movements grade separated junction in Ballydawmore, with tie-ins to the new N80 Link Road and R744 Link Road.
• A new at-grade roundabout in Scurlocksbush with tie-ins to the existing N11.
• Two, connected at-grade roundabouts in Ballynahallin / Clavass, with tie-ins to the existing N80.

5 roads have already been diverted through alternative routes at Rockspring, Knockrathkyle and Scurlocksbush, Monart, and Killaligan in order to allow the construction of new bridges over the future motorway. More roads will be diverted with a target to have most of the structure works completed by the first quarter of 2018. Interceptor drainage, silt fencing and siltation ponds/settlement lagoons have been installed along the scheme to mitigate the effect of the works on the surface water network. Drainage works for the carriageway in underway in readiness for the start of pavement works.

Particular features include:

• The earthworks haul roads have been stabilised with lime to improve the earthmoving operation.
• The pavement will be a flexible composite construction with an insitu stabilised subbase layer, overlaid with CBGM topped with two layers of asphalt.
• The aggregates for the subbase and CBGM have been won on site.
• The median barrier will be N2 extruded concrete for the entire works.
• There is a further 70km of extruded concrete drainage channel and concrete kerb.

Project credits:

Client: National Roads Authority, Ireland
Main contractor: BAM Civil Ltd and Dragados Joint Venture

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