Operation Brock Barrier Set for M20 Tonight as Dover Ferry Capacity Sinks
The moveable barrier system on Kent’s M20 will be deployed tonight, Monday 21 March, to tackle reduced ferry capacity at the Port of Dover. The Kent Resilience Forum confirmed the precautionary move today ahead of possible freight delays.
Contraflow Setup to Keep Traffic Moving
Although there is enough space for displaced P&O freight, Operation Brock will be activated to minimise disruption and keep traffic flowing smoothly. The M20 will close from 8pm tonight between junctions 8 and 9, reopening by 6am Tuesday with the contraflow in place. This overnight closure is designed to cause as little hassle as possible for drivers.
The contraflow will run on the London-bound carriageway, while freight trucks heading to Dover or Eurotunnel will queue on the coastbound side if needed. All cars and motorbikes must follow signs to enter the contraflow and stay safe.
What Is Operation Brock?
- It’s a traffic management plan to keep the M20 open both ways using a moveable concrete barrier.
- Over 14,000 tonnes of concrete blocks and 8,000 cones are swiftly deployed using specialist machinery.
- HGV drivers bound for Dover and Eurotunnel must stick to official signed routes under legal obligation.
- Local drivers follow designated signs to avoid queues and keep traffic flowing.
A fully signed diversion will be in place during tonight’s closure. For the latest updates, visit nationalhighways.co.uk/travel-updates/operation-brock/.
Officials Urge Patience and Cooperation
“Given the ongoing suspension of P&O services, KRF partners have agreed to implement the Brock contraflow,” said Simon Jones, Kent County Council Corporate Director for Growth, Environment and Transport.
“This is the best way to protect local communities, keep Kent moving, and get people to their destinations quickly and safely. We’re monitoring the barrier deployment closely and will remove it as soon as possible. Thanks to everyone for their patience.”
Nicola Bell, Highways England Regional Director, added: “Operation Brock helps maintain smooth traffic flow in Kent, ensuring businesses and residents face minimal disruption.
The moveable barrier has proven effective in the past, balancing freight needs with motorists’ journeys. Hauliers must follow the M20 signs and stick to official routes.”
