The A418 was closed last night near Thame to allow firefighters to tackle a barn fire.
Four fire engines were called to Abbey Farm in North Weston at about 5.20pm.
Oxfordshire Fire and Rescue Service had to close the A418 in both directions just before 7pm because they had to lay their hose over the road.
Motorists had been warned, when the road was open, about the smoke billowing across the road, making driving hazardous.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here