Two cars crashed on the West Stafford bypass.
A blue Honda Jazz, registered to a man from Dorchester, and a black VW Golf, also registered to a man from Dorchester, collided shortly before 3.30pm.
Police confirmed that no one was injured.
A spokesperson for Dorset Police said: “We were called at 3.23pm to reports of a two-vehicle road traffic collision in the Crossways direction of the bypass.
The B3143 was closed in both directions reopened shortly after 5pm.
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