Traffic built up in Ipswich in rush hour after two cars collided near Bourne Bridge, which leads to the A14.
Officers from Suffolk police were called to the incident in Wherstead Road, near Fox's Marina and Boatyard, at around 5pm this evening.
A police spokesman said the entrance to the marina had been blocked following the collision.
Police said the motorists involved in the collision are not believed to have suffered any injuries.
The road was cleared shortly before 8pm.
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