A driver was seriously injured after crashing into a barrier and bridge pillar on the A45.
Police are appealing for information about the single-vehicle accident on the A45 between Raunds and Thrapston on Sunday night.
At shortly after 9.35pm, a green Ford Mondeo travelling along the northbound carriageway crossed the carriageway and struck a barrier and bridge pillar.
The driver - a 47-year-old man from Nassington, Peterborough - was taken to hospital with serious injuries but is in a stable condition.
Witnesses to this collision, or anyone with information about it, should contact the Drivewatch Hotline on 0800 174615.