The road is partially blocked after reports someone was hit by a vehicle on the A15 Wragby Road Southbound on Thursday morning.
The crash involving a car and a motorbike happened near the turning to Lincoln Minster School on Upper Lindum Street and police are controlling the traffic. Police said the crash at Winnowsty Lane was reported to them at 8.16am on Thursday, December 5.
One person has sustained minor injuries, police said.
According to AA Traffic, the road is partially blocked with queuing traffic from St Giles Avenue to Lindum Terrace.
People have also been posting on social media saying traffic is slow moving up Lindum Hill.