Update 13:30: Lindum Road is now re-open and clear for traffic.
Update 12:00: Lindum Road is still dangerous due to diesel on the road.
Further grit is needed and there will be a further delay in reopening the road.
Update 9:32: Officials have now confirmed the clear up could now take longer than initially thought as there is between 200 and 300 litres of diesel on the road.
Police spokesman James Newall said: "We are waiting for a unit from Market Rasen to come and spread some sand on it.
"We could be looking at a couple of hours before it is cleared."
9:00: Commuters are experiencing delays after a collision involving a combine harvester and a cement lorry in Lindum Road, Lincoln.
Police were called to the crash half way up the hill at 7.27 this morning.
Lincolnshire Police spokesman James Newall said: "There were no injuries and the vehicles are awaiting recovery and it is causing some tailbacks."