THE A1(M) southbound between junctions 10 and 9 is currently congested due to a lump of metal in the middle lane of the carriageway.
Police were called at about 11.50am this morning (Tuesday). Herts Highways have also been alerted and will prepare to remove the material.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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