Harpenden Road has been closed near to the junction of Townsend Drive because a “very large” tree was about to fall down.
It was reported to the police at 2.22pm and officers took the decision to close the road near the Ancient Briton pub.
Contractors are en route to the scene but have been held up in traffic. They hope to have the issue cleared up by rush hour.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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