Three people were taken to hospital after a serious two-car crash on the access road onto Hayling Island this morning.
There was heavy traffic both northbound and southbound near the Langstone Bridge area of Langstone Road.
Emergency services attended the incident, which happened at about 11.30am outside the Texaco Garage south of the bridge, close to the junction with Northney Road.
Police said a Smart car and a Peugeot were involved.
The route has now been reopened.
A South Central Ambulance Service spokesman said an elderly woman was in one car and a 26-year-old female and two-year-old boy in the other.
Firefighters helped free one of the drivers who was trapped in their car.
The toddler was taken to A&E by another family member, his mother was taken to hospital by ambulance to be treated for minor injuries, and the elderly woman was also taken to hospital as a precaution.
Drivers were queuing as far as south as the Stoke Fruit Farm shop, along the Havant Road and as far north as the A27 roundabout.