Pont Briwet is a Grade II listed wooden

Wood

Wood is a hard, fibrous tissue found in many trees. It has been used for hundreds of thousands of years for both fuel and as a construction material. It is an organic material, a natural composite of cellulose fibers embedded in a matrix of lignin which resists compression...

 bridge

Bridge

A bridge is a structure built to span physical obstacles such as a body of water, valley, or road, for the purpose of providing passage over the obstacle...

 which crosses the River Dwyryd

River Dwyryd

The Afon Dwyryd is a river in Gwynedd, North Wales, which flows principally westwards draining to the sea into Tremadog Bay south of Porthmadog....

, located near to Penrhyndeudraeth

Penrhyndeudraeth

Penrhyndeudraeth is a village and community in the Welsh county of Gwynedd. It is located between Traeth Mawr , the now largely reclaimed estuary of the Afon Glaslyn, and Traeth Bach , the estuary of the Afon Dwyryd. The village is close to the mouth of the Afon Dwyryd on the A487 from...

, Gwynedd

Gwynedd

Gwynedd is a county in north-west Wales, named after the old Kingdom of Gwynedd. Although the second biggest in terms of geographical area, it is also one of the most sparsely populated...

 in North Wales

North Wales

North Wales is the northernmost unofficial region of Wales. It is bordered to the south by the counties of Ceredigion and Powys in Mid Wales and to the east by the counties of Shropshire in the West Midlands and Cheshire in North West England...

.

Built in 1860, the privately-owned toll road

Toll road

A toll road is a privately or publicly built road for which a driver pays a toll for use. Structures for which tolls are charged include toll bridges and toll tunnels. Non-toll roads are financed using other sources of revenue, most typically fuel tax or general tax funds...

 structure carries both the Cambrian Coast railway and a single-track road south to Harlech

Harlech

Harlech is a town and seaside resort in Gwynedd, within the historical boundaries of Merionethshire in northwest Wales. Lying on Tremadog Bay and within the Snowdonia National Park, it has a population of 1,952, of whom 59% speak Welsh...

. Due to its age and weight restrictions, the road way section only carries cars, excluding lorries and ambulances. This results in an extended 8 miles (12.9 km) journey to access the Harlech road from Penrhyndeudraeth.

In July 2010, the Welsh Assembly Government

Welsh Assembly Government

The Welsh Government is the devolved government of Wales. It is accountable to the National Assembly for Wales, the legislature which represents the interests of the people of Wales and makes laws for Wales...

 announced a £20million joint-project with Network Rail

Network Rail

Network Rail is the government-created owner and operator of most of the rail infrastructure in Great Britain .; it is not responsible for railway infrastructure in Northern Ireland...

to replace the existing bridge by 2013 with a new structure. The old bridge will be retained due to its listed structure, transformed into a pedestrian walkway.