Kurmond Road was closed to general traffic last week after weather made conditions treacherous at Freemans Reach.
A full pavement reconstruction had been approved by Hawkesbury City Council to take place between Terrace Road and Wire Lane due to the ageing condition of the road pavement, however council's Director Infrastructure Services Jeff Organ said it had been sealed prematurely.
"Whilst initially sealed by the contractors as part of the reconstruction, this was undertaken prematurely and it subsequently deteriorated rapidly," he said. "As a result, the contractors undertook geotechnical investigations and commenced reconstruction of the works.
"The reconstruction commenced on September 9 with the objective of completing the sealing by the end of [last week].
"When the wet weather commenced [last week], only the lower base course had been stabilised; the upper base course had not been placed at that point in time."
The unsealed road was then compromised by the combination of traffic and wet weather, and the road was subsequently closed to all but residents and emergency vehicles on the afternoon of September 17, he said.
Residents complained about the state of the roadway, with one commenting on social media it caused her her property to flood.
Mr Organ said there had been overflow down one driveway during the heavy rainfall.
"This has been inspected and it will be rectified to prevent recurrence," he said.
Drainage of the road formation is part of the overall project, he stated.
Council and contractors were currently reviewing the pavement conditions and works were progressing this week, Mr Organ said.
"It is anticipated that placement of the upper base courses, trimming and compaction to enable sealing will commence early [this] week," he said.
"It should be noted that all costs associated with the repair of the pavement are being met by the contractors."
It should be noted that all costs associated with the repair of the pavement are being met by the contractors.
- Jeff Organ
The road remained closed at the time of going to press, and Mr Organ said it would remain so until weather conditions allowed "repair and safe usage".