The M5 has been closed in both directions after an overturned lorry caught fire.
The fire started shortly after 3pm at Junction 4 near Bromsgrove.
The driver has been taken to Queen Elizabeth Hospital in Birmingham. No one else was injured.
Drivers have been warned to avoid the area, while emergency services deal with the blaze.
Frank Bird, emergency planning officer at Highways England, said:
We are working closely with the emergency services to assist them while they deal with the incident.
As the fire is significant, we expect that the carriageway will need a detailed inspection and possible resurfacing work through the evening.
A spokesman for West Midlands Ambulance Service said: