Delays on A184 Askew Road Eastbound between A189 / Askew Road West and A185 Shields Road / B1426 Shields Road (Heworth Roundabout).
Travel time is 20 minutes.
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Detectives are investigating a serious sexual assault on a woman at the Northallerton Fairground.
Forecast for the week ahead
Officers attended the scene where a man had suffered a head injury. He was taken to hospital where is condition is described as critical.