Dyfi Bridge, Wales

Eccles’ AquaDeck Bridge Drainage System
will drain the new 725m Dyfi Bridge Viaduct

Structure – New Dyfi Viaduct, Wales

Client – Welsh Government

Merchant – JDP Yates

Designers – ARUP

Contractor – Alun Griffiths

Overall Length – 725m

Main River Span Length – 74m

Bridge Cost – £46 Million (Feb 21)

AquaDeck Units – In excess of 1500

Expansion Joints – Yes

Load Spec – D400 Type I, tested free standing

Aquadeck Certification – BSEN1433 Kitemarked, UKCA Marked, CE Marked

A new £46m bridge project on the A487, north of Machynlleth, Wales, will feature Eccles’ AquaDeck Bridge Drainage as the preferred system to improve drainage and ease flooding in the area.

The historic 200-year-old Dyfi Bridge will be replaced as a spectacular new 725m viaduct is constructed across the wider floodplain.

The project will calm traffic congestion in the area, improve transport links for Gwynedd, Powys, Ceredigion and Pembrokeshire and protect local houses from flooding concerns.

The works also included a new pathway for cyclists and walkers.

The new 725m viaduct along the Afon Dyfi, which will stretch across the associated floodplain north of Machynlleth, will be the longest single new road bridge currently under construction in the UK.

It will use over 1500 AquaDeck units to drain the bridge of surface and sub-surface water.

Approval to use the AquaDeck system was granted towards the end of 2022 after Eccles submitted layout drawings along with hydraulic data to contractors Alun Griffiths and designers Arup.

Chris Rothery, AquaDeck Project Director at Eccles, said:

‘We continue to secure some high profile projects for AquaDeck.

‘Dyfi Bridge was a highly prized contract for us and we are thoroughly delighted that AquaDeck will be installed on this impressive new structure.’