The details: Police were called to the incident in the westbound carriageway at about 07:55 on Thursday.
A spokeswoman for Suffolk Police said officers are currently at the scene.
The lorry has suffered a tyre blowout and is awaiting recovery.
Live traffic reports show long delays in the area, affecting morning commuters.
Why it matters: It comes as the PM has agreed to ministerial talks about an Ipswich Northern Bypass following mounting pressure over the economic impact of Ipswich's road network.
The bottom line: Motorists should expect delays in the westbound carriageway near Seven Hills Interchange while recovery takes place.
