J15 for M4
J14 for B4509
M5 Bristol - Queuing traffic on M5 northbound between J15, M4 (Almondsbury Interchange) and J14, B4509 (Thornbury), because of an accident earlier on. All lanes have been re-opened. Travel time is between 45 and 70 minutes. Congestion to J16, A38 (Aztec West).