Overview
- The A46 in South Gloucestershire is closed in both directions between M4 junction 18 and the A420 near Cold Ashton following a collision involving a car and a motorbike on Friday morning.
- Avon and Somerset Police are leading the on‑scene response, with National Highways Traffic Officers managing traffic at the closure.
- No official diversion has been set, with National Highways suggesting the M4 eastbound to junction 17 then the A350 south to reach the A420, with an option to join the A4 toward Bath.
- Delays are expected across the area and there is no confirmed time for the road to reopen.
- Traffic is building on approaches to M4 junction 18 and on local routes, and drivers are urged to allow extra time, plan ahead, and consider re‑routing or delaying journeys.