One man has been arrested and part of the A174 has been closed after a serious multiple vehicle crash.
The incident took place at 1:10pm and police were shortly called to the scene.
A full road closure is in place on the westbound carriageway between the Hemlington slip road and the A19 roundabout.
Drivers are being warned to stay away from the area and to find alternative routes.
A Cleveland Police spokesperson said: "A woman is reported to have an injury to her leg.
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"Officers are advising drivers to avoid the area and to find an alternative route.
"One man has been arrested on suspicion of drug driving and driving without due care.
"If you have information or dash cam footage relating to the collision please contact Cleveland Police on 101 or via our website quoting reference number 214334."
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