The incident was reported shortly after 7am today, and the road is closed both ways between B1203 (Waltham) and Cheapside Road.
As a result, traffic has built up in both directions on the A16.
There has also been a build up of traffic at the junction between the A18 and the A16 at Ludborough, possibly due to motorists re-routing to avoid the delays at Cheapside. There have been additional reports of a road closure between the Toll Bar roundabout (New Waltham), and the Louth Road roundabout (Scartho/Grimsby).
• More information as we have it.