A 39-year-old man remains in hospital after a crash between a motorbike and second vehicle on the A17 at Sutton Bridge.
The crash happened at the junction with Railway Lane on the eastbound carriageway heading towards King’s Lynn at around 10.50am on Friday, August 25.
Lincolnshire Police are appealing for anyone who saw the green Kawasaki travelling on the road to get in touch.
Motorists with dashcam footage are especially being urged to contact officers.
Anyone with information should call Lincolnshire Police on 101, quoting incident number 128 of August 25.