The M23 in Surrey has been closed southbound between Junction 8 and Junction 10 following a fatal crash in the early hours of the morning.
A highways worker, a 65-year-old man from Kent, was tragically pronounced dead at the scene.
National Highways has confirmed that the southbound carriageway is expected to remain closed until at least the early afternoon, with diversions in place for motorists.
Road users heading to London Gatwick Airport are advised to allow plenty of extra time and to consider alternative routes, as delays are building up in the area.
The incident occurred just before 1am, and Sussex Police is leading the investigation into the circumstances surrounding the collision.
The force has asked anyone who witnessed the crash or has dashcam footage to come forward and assist with the investigation.
A stretch of the M23 is also closed at Junction 8 for the M25, but it is not known whether this is related to the same incident.
National Highways has shared a diversion route for motorists:
Follow the hollow diamond symbol on road signs
Exit the M25 at Junction 6 and take the A22 southbound towards Eastbourne
Remain on the A22 for approximately nine miles, passing through South Godstone and Blindley Heath, to reach the junction with the A264 at Felbridge
At the traffic lights with the A264, turn right towards Crawley/Gatwick Airport
Remain on the A264 for approximately five miles, passing Copthorne, to reach Junction 10 of the M23 to continue your journey
