Police are asking drivers to avoid La Rue de Varvots after a pickup truck overturned.
It happened just before 1pm on Wednesday afternoon.
Emergency services are on the scene in St Mary, just outside the former Tamba Park site.
A Police spokesperson says the road is completely blocked, and some diesel has been spilt onto the road.
No-one has been injured and no other vehicles were involved.
DFI and DVS are on-site to lift up the truck and clear the area so the road can reopen.
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