National Highways has provided diversion advice after a crash shut down the A34 on the Oxfordshire Berkshire border.
The road organisation has confirmed emergency services are on the scene after a four vehicle crash this morning, Thursday, December 18.
A spokesperson said: "The A34 in Berkshire is closed northbound between M4 J13 (Chieveley) and the A4185 (Chilton) due to a collision.
READ MORE: A34 shuts down after huge crash on border involving four vehicles
"Emergency services including Thames Valley Police are in attendance. National Highways Traffic Officers are also on scene assisting with traffic management."
For all those that would usually travel that way, National Highways has now advised a diversion route.
From the A34 northbound, motorists should leave at the M4 junction 13 interchange.
At the roundabout, they should use the first exit and join the M4 westbound and from there follow the M4 to junction 14.
At the roundabout use the third exit and join the A338 (Ermin Street) and then continue for approximately 10 miles to Wantage.
At a T junction with the A338 (Newbury Street/Ormond Road) motorists should turn right and join Ormond Road.
There will then be another T junction with the A417 (Charlton Road) at which drivers should turn right and join the A417.
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Continue for approximately 5 miles to a roundabout at Rowstock. Use the first exit and join the A4130 (Abingdon Road).
Follow the A4130 for approximately two miles to the A34 Milton interchange and at the roundabout, use the first exit to rejoin the A34 northbound
National Highways added: "If this closure impacts on your planned route, please allow extra journey time. Plan ahead, you may wish to re-route or even delay your journey."
