A three-vehicle crash on the A14 near Rougham is causing delays to motorists.
Police were alerted to an accident involving three lorries at around 3pm today.
It happened on the westbound carriageway of the A14, near junction 45 - the Rougham turn-off.
A police spokesman said that while the inside lane is partially blocked the outside lane remains open.
Recovery vehicles are said to be on route to the scene.
No-one involved is thought to have been injured.