The A2 was closed in both directions after a major accident near Dartford Heath earlier this morning.
The crash happened at around 9.20am near the junction with Old Bexley Lane.
A 30-year-old man has been taken to Queen Elizabeth Hospital in Woolwich with leg, chest and abdominal pains.
Kent-bound traffic has now been released after congestion was all the way back to the Black Prince Interchange.
- Stat Chat: What do people think about driverless cars?
- Pet of the Day: Charlie the Staffie is not a fan of thunder
- Goldsmiths professor wins diversity award
- Erith woman's anger at Wetherspoon's 'lack of compassion' following father's bathroom fall
- Lewisham Islamic Centre joins wife of British hostage in IS release plea