A woman was hurt when her car went into a ditch on the Burgh le Marsh bypass.
The accident happened at 4.45pm on the A158 yesterday.
A spokesman for Lincolnshire Police said the woman received minor injuries.
Later that evening, Lincolnshire Fire and Rescue was called to the A158 at Gunby when a van caught fire.
A crew from Spilsby was deployed to the scene at 6.32pm and the fire was extinguished using one hose reel.
They tweeted the cause was a fault within the engine compartment on van.
Witnesses in Burgh-le-Marsh where motorists diverted to claimed they heard a bang and believed there had been a double accident.