Upgrades to Farrer Road will continue this week, impacting the flow of traffic as students return to school on Wednesday.
Stage one of the roadworks was expected to be near completion by the beginning of term one, but have been delayed by at least a week due to "unforeseen circumstances", the council has said.
The section of the road currently under reconstruction sits with proximity to the bus zone and drop-off zone at The Riverina Anglican College.
For the duration of the roadworks, access to the school will only be permitted to drivers via the Coolamon Road turn-off, on the eastern side of Farrer Road.
Pedestrians will still be able to walk from the university to the school via the usual access route.
Traffic control will be in place to monitor the management of the situation from tomorrow.
Stage two of the four-part widening project is scheduled to start on February 3.
When stage two commences, the Sturrock Drive section of road will be closed until March 20.
Should weather conditions interfere with progress, the $6.4 million project may take longer than currently planned.