There are long delays on the A14 this morning (Thursday) after a collision involving four cars.
The A14 spur road is closed and traffic is queuing between junction 14 of the A1 and junction 23 of the A141, Spittals Interchange.
Drivers are being advised to use alternative routes while emergency services attend the scene.
Cambridgeshire police said officers were contacted at about 8.15am to reports of a collision at Alconbury.
A spokesman for the force said one person had suffered minor injuries.