CCA6.2 Newcastle to Wicklow Harbour
CCA6.2 is the section of coast that stretches from the south of Newcastle down to Wicklow. At this frontage, the trainline runs along a natural embankment at the back of the beach. Coastal protection measures currently in place include a concrete armour unit revetment and rock revetments along some sections of this frontage. The majority of the frontage is currently undefended from coastal erosion.
The Emerging Preferred Scheme to be taken forward to public consultation is rock revetments and wave walls.
The top advantages identified with the Emerging Preferred Scheme are:
- Non-complex and comparatively low-cost construction.
- Minimal maintenance burden and expenditure.
Rock revetment
- A new rock revetment will be constructed for some of the unprotected frontage to prevent erosion and stabilise the shoreline alignment. These structures will also reduce wave overtopping onto the railway line.
- The rock revetment will comprise a minimum of two layers of natural rock boulders with a rock underlayer. The rock size has been selected to provide stability in the long term and to accommodate climate change. The geometry of the rock revetments further limits wave overtopping.
Beach access steps
- Concrete beach access steps will be built through the new rock revetments to provide safe access to and from the beach.
Wave Walls
- Some of these rock revetments require a wave wall immediately behind them to provide an impermeable barrier at the back of the permeable rock revetments. It has been assumed at this stage of the design that the wave wall will be precast reinforced concrete. The alignment and size of the walls will be determined during the next stage of design
Useful Material and Downloads
- CCA6.2 Brochure
- Emerging Preferred Scheme CCA6.2 Plan
- Cross Section Extension of Rock Revetments
- Emerging Preferred Scheme CCA6.2 Preliminary Options Selection Report
Appendices
To make a submission please visit the How to Engage section.