Overview
- Cyngor Gwynedd’s two-year coastal defence project is due to begin this summer and finish by summer 2028, with construction paused in school holidays.
- The plan keeps the primary seafront wall at its current height but adds a 1.2km set‑back concrete recurve wall rising to 1.55–1.7 metres, with the promenade and Marine Parade closing to act as a flood buffer during storms.
- Project modelling indicates a one‑in‑200‑year event could leave parts of the resort under more than two metres of water, threatening about 757 properties and the Cambrian railway.
- Opposition led publicly by resident Kye Smith challenges the wall’s height, visual impact and safety of planned rock armour, citing a 2024 rescue on Tywyn’s rock armour and concerns over beach loss.
- Around 86,000 tonnes of rock are required for the revetment, with delivery options under review that include thousands of HGV trips through the town or fewer barge loads.