Traffic is reported to be queueing in both directions after a crash on the A272 between Buck Barn and Cowfold.
Sussex Police say the accident, which involved a lorry and a car, happened just west of Cowfold around 12 noon.
A police representative said a woman, who had been in the car, was taken to hospital with a leg injury.
Drivers are being held up between the Coach House roundabout and the crossroads at Buck Barn.
Don’t miss out on all the latest breaking news where you live.
Here are four ways you can be sure you’ll be among the first to know what’s going on.
1 Make our website your homepage at www.wscountytimes.co.uk
2 Like our Facebook page at www.facebook.com/wscountytimes
3 Follow us on Twitter @wscountytimes
4 Register with us by clicking on ‘sign in’ (top right corner). You can then receive our daily newsletter AND add your point of view to stories that you read here.
And do share with your family and friends – so they don’t miss out!
The County Times – always the first with your local news.
Be part of it.