Chaos on A1 Barnet Bypass: Southbound Shut for Hours After Jackknifed HGV

The A1 Barnet Bypass southbound is shut for hours after a massive jackknifed HGV blocked the road. Traffic is forced off at South Mimms (Junction 1) as emergency crews scramble to contain a huge diesel spill and clear the wreckage.

Major Diesel Spill Sparks Long Closure

Police, Highways England, and the Environment Agency are on the scene dealing with a large diesel leak from the lorry. Recovery efforts continue, but damage to the road surface means the closure won’t be lifted anytime soon.

Traffic Chaos Amid Multiple Road Closures

  • Southbound A1 Barnet Bypass remains shut for hours
  • Traffic diverted at South Mimms (J1)
  • Separate planned M25 closure anti-clockwise between J23 and J22 adds to the disruption

Drivers are urged to avoid the area and hunt for alternative routes as traffic snarls worsen. More updates on diversions will follow once confirmed.

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