A KEY route through Dorset is partially blocked with heavy traffic following a vehicle breakdown. 

The A31 near Winterborne Tomson is experiencing congestion in both directions due to the vehicle breakdown at Marsh Lane today (Monday, May 24).

Traffic maps in the area report heavy congestion in both directions as motorists take turns to overtake the broken down vehicle.

Google traffic estimates that it will take approximately nine minutes to travel on the affected section of the A31.

An update from Travel Dorset reads: "A31 partially blocked, slow traffic due to broken down vehicle at Marsh Lane (Red Post Crossroads)."

More to follow.