A crash closed both lanes of the A19 causing a long tailback.
The incident involved two vehicles just before the A690 turn off the northbound carriageway.
NECA Traffic reported police attended the scene, with one lane opened soon after the collision.
A jam was caused and led back towards Seaham.
A queue also built up on the A690 Durham Road heading towards Sunderland.
The road is now clear after the vehicles were moved.