Pont Briwet Transportation Improvement Scheme Wins the ICE Wales 2016 Innovation Award

17 08 2016

The annual Institution of Civil Engineers Wales Cymru Awards, celebrates outstanding engineering achievement across the country. The 2016 Awards Ceremony was held at the Marriott Hotel, Cardiff on Friday 17th June and was hosted by ICE President Sir John Armitt, ICE Wales Cymru Chairman David Rowlands and Chairman of the Judges’ Panel, Christopher Craufurd.  Award winners were announced to an audience of more than 250 industry leaders in Wales.

The winner of the Innovation Award was the Pont Briwet Transportation scheme, a £16.5 million rail and highway upgrade including the Pont Briwet viaduct over the Dwyryd estuary in Gwynedd. The scheme had already won the 2016 Transportation Project of the Year by the Chartered Institution of Highways and Transportation of Wales at their annual dinner in January.

The new viaduct replaced a Grade 2 listed timber structure, carrying a single track railway and a single lane toll road. Originally constructed in the 1860s it required a major costly intervention to extend its life span. Speed restrictions of 20 mph were imposed on both road and rail traffic.

The viaduct is a pioneering bridge solution as the longest fully integrated road/rail viaduct in the UK.

A rail halt, again using precast concrete for the majority of the work, was constructed on the south side of the bridge and both approach roads were widened and improved throughout their entire length.

As member of the design team and a key associated organisation, The Stilwell Partnership provided highways and drainage aspects of the civil engineering design of the approach roads and adjacent junction improvements.  This included cycleways and pedestrian access to the new bridge and the rail station.  The civil engineering design included production of Construction Drawings and the Specification for Highway Works.

The judges liked the way in which the scheme fitted into the environment. The use of precast concrete for the majority of the structure resulted in a quicker and safer construction. The removal of single carriageway working and traffic lights has significantly improved the traffic capacity on an important tourist route.

Camera 1 FINAL

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