A crash is reported to have blocked the A4130 at Didcot.
The crash, at the junction with the B4493, is reported to be causing congestion to the Milton Interchange on the A34.
Heavy queues are reported into Didcot from the A34 with no traffic heading out of town.
In a separate incident, the A34 southbound was partially blocked after a lorry went into the central reservation between the Milton Interchange and the Chilton Interchange.
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