There are long traffic queues from Rhubarb Bridge in Peterborough.
The Peterborough Telegraph has been contacted by members of the public who have been stuck in traffic by the A47/A15 roundabout.
A police spokesman said there were reports of a collision by the A47 slip road off the A15 which joins with Gresley Way at 2.10pm, with a road closure now in place.
He added that two women had suffered injuries but the extent of these were not yet known.
The ambulance service has been called and police are currently at the scene.
A spokesman for the East of England Ambulance Service said: “We were called at 2.12pm today to this road traffic collision.
“Two ambulance crews attended to a report of two patients.
“Both were taken to Peterborough City Hospital for further care.
“Their condition is not believed to be life-threatening or serious.”
Stagecoach East tweeted: “Accident near/on Boulevard causing serious delays to most city services due to traffic congestion. Please be patient.”