Part of the TT course is currently closed as the Department of Infrastructure deal with a fallen tree.
The main road from Peel to Douglas road is closed from 9.30am until 2pm this afternoon.
Officers say the road from Ballacraine to Crosby Crossroads will be inaccessible as the DOI clear the unsafe tree.
Bus services will be diverted via the Glen Darragh road, Braiid and Foxdale.
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