Britannia Bridge (Porthmadog)
|Crossings related to the A497|
|The Cob (Porthmadog)|
Britannia Bridge carries the A497 over the sea inlet known as Llyn Bach which forms the mouth of Afon Glaslyn, at the east end of Porthmadog. It links the town's High Street to the Cob. It now also carries an on-street single track section of the narrow-gauge Welsh Highland Railway (WHR) on its way to join the Ffestiniog Railway at Harbour Station. The public service on this section of the WHR began in March 2011.
Bizarrely, this means that there are now two combined road-rail bridges named Britannia Bridge in Caernarfonshire.
The road over the bridge was the A487 trunk road until the opening of the Porthmadog bypass in October 2011.