The M4 in Berkshire has been shut down again.
National Highways confirmed the motorway is fully blocked off to traffic in all directions between J10 (Wokingham) and J11 (Reading), with traffic already descending into utter chaos due to the arterial nature of the M4 link road.
Crews are racing to mend structural damage to a power line pylon that was discovered near the motorway.
In the UK, power line pylons - also known as transmission towers - are huge, high voltage structures of up to 400,000 volts. They're also uninsulated, so if one were, say, to fall over, the damage could be catastrophic Depending on the network, they can reach heights of 150gt, making structural works a dangerous and critical procedure.
The M4 is expected to remain closed in both directions throughout the night and well into the morning.
