Woodburn-Coraki Road – Thearles Canal Culvert Upgrade

Summary and scope

The scope of the project is – • Construct and install a duplicate box culvert 2700 x 2100, 10.6m in length at a depth of 1800mm next to the existing Thearles Canal culvert on Woodburn-Coraki Road (MR145). Refer to attached culvert plan. • Remove existing guardrail and install new guard rail to both sides of the road edge. • There is to be 500mm of separation between the exiting culvert and new culvert. • No fines concrete to be used between the existing and new culvert. • Works to be conducted in two halves to allow one lane to always remain open with the lane width being a minimum of 3m. • Traffic control is to be organised and maintained by the contractor. • Minor road shoulder repair may be required to make the single lane trafficable. • 3.22m sheet piling is required and a protection barrier while works are being constructed to maintain lane opening. Refer to attached plan. • Supply and install scour protection to the inlet and outlet sections. • Reinstatement of road surface (as per Regional Geotechnical Solutions pavement design Ref: RGS01626.3-AB dated 13/08/2020) Please note – Council will be purchasing the box culverts; these will be stored at Dairy Flat works compound of Woodburn Coraki Road. Delivery December 2023.