Police say they received a call that a male was on the bridge between the roundabouts at 8.22am today, Tuesday April 19.
The road is expected to remain closed this morning.
Please avoid the area and find an alternative route.
A46 closed due to police incident
A section of the A46 Lincoln Bypass, between Carholme Road and Riseholme Road roundabouts, has been closed following a report of a concern for safety.