RECAP: Crash involving ambulance vehicle blocks busy Bury road The collision lead to a series of traffic delays close to Prestwich Tesco Motorists are advised to avoid the area The A56 at Bury New Road was blocked following a collision involving a vehicle this afternoon (May 20). Traffic monitoring website Inrix reported that the road has been blocked since 2.25pm on approach to the roundabout on Valley Park Road in Prestwich. GMP confirmed they attended the scene and no arrests have been made. A GMP spokesperson said: "Officers were called around 1.40pm today (Thursday 20 May) to Valley Park Road, Prestwich following a collision involving one vehicle."