ST Aldate's will be closed between 1 and 5am tomorrow while a portacabin is moved from outside Christ Church College.
Stagecoach has warned of slight delays to some of its services while the road is partially closed.
It said its buses towards Oxford city centre will be diverted and it will be unable to serve stops on the High Street or St Aldate's.
Buses towards Blackbird Leys will be unable to serve stops on Speedwell Stop or St Aldate's.
Services towards Oxford city centre will be diverted and won't stop on the High Street or St Aldate's.
Oxford Tube coaches towards London won't stop at the High Street/Queens Lane stop. Alternative stops are Gloucester Green, Speedwell Street and St Clements.
Coaches towards Oxford won't stop at the High Street/Queens Lane and St Aldate's stops. Alternative stops are St Clements and Gloucester Green.
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