Police have closed both carriageways of the A66 close to Middlesbrough's Riverside Stadium after a two huge steel pipes fell off an HGV into the path of a second lorry.
It's thought the second HGV collided into the pipes which are 40 foot long and 4 foot in diameter. Nobody was hurt in the accident.
The second lorry was carrying a liquid but there has been no spillage. Officers were called just before 11.30. Cleveland Fire Brigade is at the scene.
Drivers have been warned the road will remain closed in both directions for at least four hours.