BASEC Engineering was engaged by Clarence Valley Council to deliver concept design services for the remediation of a significant landslip impacting Armidale Road — a key regional transport corridor affected by severe weather and ground instability.

The project focused on identifying the root cause of slope failure, developing a practical and buildable stabilisation solution, and preparing documentation suitable to support funding approval and progression to detailed design and construction.

Our scope of services included:

• End-to-end concept design management from site assessment through to remediation strategy development

• Detailed site inspections, survey coordination and geotechnical assessment to determine slope failure mechanisms

• Slope stability analysis and risk assessment to inform remediation options

• Development of concept stabilisation methodology including earthworks, retaining solutions and drainage improvements

• Surface and subsurface drainage design to reduce future groundwater and saturation risk

• Preliminary pavement reinstatement strategy for the affected road corridor

• Preparation of concept design drawings and technical documentation

• Preliminary cost estimates to support DRFA and funding pathway requirements

• Constructability review considering access constraints, traffic management and staged delivery

• Risk identification and mitigation planning aligned with Council asset standards

Project outcome

The Armidale Road Slip Remediation concept design provided Council with a clear, technically sound and costed pathway to restore the affected corridor. The proposed solution addressed immediate slope instability while integrating long-term resilience measures to reduce the likelihood of recurrence. The project positioned Council to confidently progress to detailed design and secure funding for construction delivery.