There are tailbacks on the M4 at Newport this evening as rescuers try to get a dog off the motorway.
One lane is blocked and there is queueing traffic due to three cars and a dog in the road on M4 Westbound between J27 B4591 (Highcross) and J28 A48 / A467 Forge Road (Tredegar Park).
Lane one is blocked by the three cars, who are trying to assist with the retrieval of the dog says Traffic Wales.
Police are holding traffic back, whilst the dog is safely retrieved from the carriageway.
The outbound and inbound lanes of the A4232 have reopened says Cardiff Council.
A4232 outbound has reopened, dedicated off slip has also been reopened inbound. Part1
A4232 - traffic Wales expect contra flow lane, inbound, to reopen shortly
A4232 - contra flow, inbound, now open. Junc 33 operational as normal
Traffic chaos in and around Cardiff could last well into Wednesday afternoon.
Vale of Glamorgan Council says severe traffic delays on routes into Cardiff and to the M4 were caused by a lorry carrying 26 tons of caustic waste which was in collision with three other vehicles on the A4232, the Cardiff Bay to M4 link road.
The South Wales Trunk Road Agency, South Wales Police and South Wales Fire and Rescue Service remain at scene and Natural Resources Wales have been alerted to the spillage.
The road will remain closed for approximately six hours to allow for barrier repairs.
Congestion is expectedto remain on A48 inbound up to J29, Coryton, Manor Way, Culverhouse Cross, A48 (Tumble) and Cowbridge Road West which are the main diversion routes.
Severe delays are also being experienced on routes linking to the A48 and the A4050 (Port Road).
Motorists are advised to allow considerable extra time for journeys on these roads.
Cardiff Council has tweeted that the overturned tanker on the A4232, is likely to mean the road is shut for six hours.
A4232 closure expected to remain in place for 6 hours. Tanker overturned
There's severe congestion on routes into the city due to the closure of the A4232 North bound this is having a major effect on most routes.
This morning's accident has led to long delays on the major routes into the capital.
The M4, A470, A48 East and Westbound and the A48M all have delays.
There are no estimates on when the A4232 will reopen.
Update A4232: Vast majority of contents now transferred, vehicle will be righted onto its wheels when the tank is empty
A busy commuter road into and out of Cardiff has been closed after an accident.
Police and the fire service are dealing with the accident. The road is closed between the M4 and Culverhouse Cross.
They say it involves a lorry and two cars. Those involved have minor injuries but because the lorry has overturned the carriageway is likely to be closed for several hours.
Chemicals have spilled across both carriageways.
Police say motorists are advised to avoid the area to ease congestion.
Update A4232: Crews will be at scene for a further 1-2 hours whilst the contents of the tanker are decanted to a replacement tanker
The A4232 is closed in both directions and there is heavy traffic after a chemical spillage from an overturned tanker between Culver House Cross and the M4 at J33 (Cardiff West And Services).
Strong winds on the M48 Severn Bridge between J2 (Chepstow) and J1(Aust) mean one lane is closed in both directions and there is a 40 mph speed limit.
Strong winds on the A55 Britannia Bridge between J8A (Llanfair P.G.) and J9 A487 (Treborth) mean there is a 30 mph speed limit.
One lane is closed and there is a 40mph speed limit because of strong winds on the Severn Bridge.