Essex Police were called to the A13 in Thurrock last night (credit: Essex Police)
Officers were called to a grey Suzuki Swift which had left the road on the London-bound carriageway just past Orsett Cock at 8.25pm yesterday (Thursday, 20 July).
The driver the car, who was a man in his 30s, was pronounced dead at the scene.
A passenger in the car, who is also a man in his 30s, was taken to hospital with injuries which have been described as life-threatening.
The road was closed while officers investigated and was re-opened at 2.15am today.
Essex Police are asking any witnesses or anyone with dash cam footage to come forward, quoting incident 1462 of 20 July.
Residents can also report any necessary information on the Essex Police website.
Alternatively, you can call police on 101 or in an emergency, call 999.
If you would like to make an anonymous report, you can contact independent charity @Crimestoppers, by visiting their website or by calling 0800 555 111.
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