The A14 westbound carriageway has been completely closed following a serious crash involving a car and van this morning.
Suffolk police have closed the road at junction 47 of the A14 by Woolpit and three fire engines are also on scene.
Traffic is stretching back to the other side of Stowmarket, almost reaching junction 50.
A diversion has been put in place at junction 51 by Beacon Hill and drivers are being advised to avoid the area if possible.
Lane two has now been opened to traffic, easing some of the congestion but drivers are being asked to be 'mindful' when passing the scene.
A woman has now been arrested on suspicion of drink-driving in connection with the crash.
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