The A343 Newbury Road will be closed tomorrow (Thursday) and Friday to allow for cutting vegetation and repairing brickwork on the railway bridge.
The road will be closed from a point 10 metres south of the railway over bridge to a point 10 metres north of the same over bridge.
It is expected to be closed on Thursday 22 January from 22.00 to 06.00 on Friday 23 January 2015 and again on Friday 23 January 2015 from 22.00 to 06.00 on Saturday 24 January 2015.
Alternative routes have been posted as from the northern point of closure, North on Newbury Road, west and south on Saxon Way, further south on Redon Way, east on Northern Avenue and north on New Street to the southern point of the closure and in the other direction.
Hampshire County Council have said reasonable access to adjoining properties will be available while the works are carried out.