One person was freed from a van following a crash on the A14 near Risby.
Police were called to the two-vehicle collision, near the slip-road leading to the village in the Newmarket-bound direction, at 1.45pm.
Ambulance and fire crews are also in attendance.
An ambulance service spokesman said: “Two casualties were treated, one for a neck injury and one suffering a chest injury.
“Their conditions aren’t thought to be serious but they’ve been conveyed to West Suffolk Hospital for further treatment.”
The fire service said they freed one of the casualties from a van.
The road reopened before 3.30pm.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here