Smith-Cross Road Culvert Upgrade

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Mackay Regional Council is upgrading the causeways and installing box culverts at two sites on Smith-Cross Road to provide better access to residents.

As local residents will be aware, the current causeways are prone to inundation and access to traffic is restricted during periods of rainfall. Upgrading the current causeway structures to provide better access, improved safety and greater flood immunity during rain events.

The upgraded causeways, once complete, will offer Q2 flood event immunity under the roadway and Q5 flood event immunity overtop the road (remaining trafficable to emergency vehicles only). This will be achieved by raising the road level at each site by approximately one metre and installing three (3000mm x 1800mm) box culverts at Site 1 and three (3000mm x 1200mm) box culverts at Site 2.

During construction, access to both causeways will be closed and a single-lane vehicular side track will be constructed at each site to accommodate traffic. Some vegetation clearing, including tree removal is necessary for installation of the temporary side track. At completion of the works, Mackay Regional Council will reinstate and re-vegetate the affected area by replanting 983 trees, shrubs and grasses.

The newly-constructed causeways will span 6m wide by approximately 40m long and will feature sealed pavements on approaches, similar to the Camilleri’s Road causeway. Adequate fish passage will be provided in accordance with the Department of Agriculture and Fisheries regulations.

Works are scheduled to begin in early-August and will continue for approximately three months, weather permitting.

We appreciate your patience during these works and apologise for any inconvenience.


This Works for Queensland project is delivering jobs for regional Queensland and funded by the Queensland Government.

Mackay Regional Council is upgrading the causeways and installing box culverts at two sites on Smith-Cross Road to provide better access to residents.

As local residents will be aware, the current causeways are prone to inundation and access to traffic is restricted during periods of rainfall. Upgrading the current causeway structures to provide better access, improved safety and greater flood immunity during rain events.

The upgraded causeways, once complete, will offer Q2 flood event immunity under the roadway and Q5 flood event immunity overtop the road (remaining trafficable to emergency vehicles only). This will be achieved by raising the road level at each site by approximately one metre and installing three (3000mm x 1800mm) box culverts at Site 1 and three (3000mm x 1200mm) box culverts at Site 2.

During construction, access to both causeways will be closed and a single-lane vehicular side track will be constructed at each site to accommodate traffic. Some vegetation clearing, including tree removal is necessary for installation of the temporary side track. At completion of the works, Mackay Regional Council will reinstate and re-vegetate the affected area by replanting 983 trees, shrubs and grasses.

The newly-constructed causeways will span 6m wide by approximately 40m long and will feature sealed pavements on approaches, similar to the Camilleri’s Road causeway. Adequate fish passage will be provided in accordance with the Department of Agriculture and Fisheries regulations.

Works are scheduled to begin in early-August and will continue for approximately three months, weather permitting.

We appreciate your patience during these works and apologise for any inconvenience.


This Works for Queensland project is delivering jobs for regional Queensland and funded by the Queensland Government.