The crash involved a silver Audi A4 and an HGV. The female driver of the Audi had been struck in the collision.
Police say a 54 year old female was located and given first aid, but died at the scene. Her next of kin have been informed and are being supported by a Family Liaison Officer.
Officers have thanked the public for their patience whilst the road was closed.
Any witnesses are asked to contact the Police on 101 quoting Log 746 11/09/2018.
The 33 year old remains in police custody for questioning.
14-year-old girl missing from Exeter
Man reattaches flags moments after removal
Rocket builder careers in Cornwall to soar
'Twas the weather warning before Christmas
Police watchdog investigates after fatal Plymouth crash
Torbay memorial bench prices top London's
