A55 reopens after lorry overturned at Abergwyngregyn
The A55 has reopened after an articulated lorry overturned in Gwynedd, spilling 500 litres of diesel onto the road.
The incident happened at Abergwyngregyn at around 07:50 BST and left one person injured.
A 12-mile traffic jam built up on the commuter route, but the westbound carriageway reopened later.
The eastbound carriageway opened at about 20:30 BST after the lorry had been removed and the road hosed down.
Traffic Wales said vehicles were down to one lane at junction 13 near the scene, close to College Farm, and the carriageway was expected to fully reopen following an inspection on Thursday morning.
After the crash on Wednesday, the Welsh government said nearby roads were "heavily congested" with diverted drivers.
Drivers were advised to detour via the A5 at Betws-y-Coed and then the A470.
Workforce teams carried out repairs, helping to remove the lorry's load of 18 tonnes of meat and cleaning up the spilled fuel.
The lorry was righted and removed later in the day, but emergency services continue the clean up.
The fire service said crews from Bangor and Llanfairfechan as well as a specialist environmental protection unit from Holyhead were sent.
The Environment Agency Wales officers worked with the emergency services to block drains and absorbent material was used to contain and clear the diesel to protect the Afon Aber which is nearby.
Traffic Wales reported long queues southbound into Bethesda, on the route of diverted traffic.
There were also reports of gridlock in the Llanrwst area as vehicles try to divert along the A5 down the Conwy Valley.
Meanwhile, passengers who missed their ferry from Holyhead to the Republic of Ireland were being warned to expect further delays.
A spokeswoman for Stena said the 21:30 BST sailing was full but there was availability on the 02:30 BST on Thursday.