Heritage Cases

The proposed project entails the upgrading of 32.0km of road from the intersection with the R334 (km 9.580) up to the Sunday’s river bridge (km 34.700). The horizontal alignment will be offset by 7m from the intersection with the R334 at Motherwell, to the Sundays River Bridge. Thereafter the alignment returns to the existing centreline. The vertical alignment will be smoothed out along portions of the alignment to prevent sudden dips and rises in the road surface. As a result, substantial mass earthworks (cut and fill) on the existing road alignment will be required. The road crosses the Coega and Sundays Rivers. The existing Coega River Bridge will be demolished and reconstructed on a new horizontal and vertical alignment close to the existing bridge. The resulting bridge width will be 14.35m, the road width will be 13.4m and the length of the bridge will be 25m. The Sundays River bridge will be reconstructed and widened. As it will be necessary to widen the deck the existing balustrades and sidewalks shall be demolished, and a duplicate bridge will be constructed alongside the existing structure in order to accommodate the wider road profile. The new deck will accommodate a road width of 13.4 m. Five existing culvert structures (Culverts B- F) will be expanded. The five in situ box culverts will be completed with inlet and outlet structures with 3 cell x 3400mm width x 3200mm height configuration. Two new culvert structures will be constructed along the alignment. Culvert A has a configuration of a 2-cell x 2400mm width x 2400mm height and Culvert G has a 2-cell x 2000mm width x 1800mm height. Two precast wildlife underpasses will be constructed along the R335 road. These culvert structures will have a 1-cell x 2400mm width x 2400mm height configuration. Additional works includes the construction of retaining walls, road and cross drainage, guardrails, signage, fencing, bus / taxi shelters and stops and road markings.