Full diversion details as A299 Chestfield Tunnel closed for maintenance

Chestfield Tunnel on A299 Thanet has been closed in both directions while works are completed
-Credit: (Image: Google Maps)


A tunnel closure along the Kent coast is causing extensive travel disruption near Whitstable. As of 6am this morning (Tuesday, June 11), the Chestfield Tunnel on the A299 Thanet Way has been shut in both directions.

The road closure is in effect between Clapham Hill, Whitstable and Eddington Roundabout, Herne Bay. Kent County Council’s (KCC) Highways department has confirmed that this due to ongoing maintenance works at the tunnel.

As a result of the tunnel closure, drivers are facing considerable traffic in the surrounding area, with KCC Highways urging road users to “expect delays” around the A299 Thanet Way. Having labelled this a “high severity” incident, KCC Highway has also advised drivers to: “allow extra time for your journey”.

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It is not yet known when the road is expected to re-open and KentLive has approached Kent County Council for further details. While Chestfield Tunnel remains fully closed, drivers will need to use the following diversion routes:

London-bound (westbound)

Drivers will be diverted off of the A299 Thanet Way via the A291 Canterbury Road, onto the A2990 Thanet Way, continuing onto the A290 Clapham Hill, then using the westbound slip to return to the A299 from Wraik Hill Roundabout in Whitstable.

Coastbound (eastbound)

Traffic will be diverted off of the A299 Thanet Way using the slipway to travel onto the A2990 Thanet Way, before moving onto the A291 Canterbury Road to re-join the A299 Thanet Way at Herne and Broomfield.

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