Seqwater has appointed an experienced contractor, Fulton Hogan, to undertake construction. Work is expected to take up to 12 months to complete. The $24m Leslie Harrison Dam Upgrade will strengthen the dam wall and spillway to improve safety and is expected to be completed by mid-2019.

What to expect during construction

• Increased traffic, including delivery trucks, on local roads.
• Most construction traffic will access the site via Dam Road, off Mount Gravatt – Capalaba Rd, and a temporary bridge across Tingalpa Creek from mid-July.
• Temporary traffic management on local roads as required to maintain the safety of both the community and construction workers.
• Minor disturbances associated with construction work, such as noise and dust.
• No change to existing Seqwater operations, including the Capalaba Water Treatment Plant.

All works will take place between 7am and 5.30pm on weekdays and between 7.30am and 2pm on Saturdays. Construction workers will also be travelling on local roads for half an hour before and after work hours.

Project contact details

Fulton Hogan has established a community hotline and project email account for enquiries or complaints.

• Free call community hotline: 1800 405 086
• Project email: [email protected]

Construction traffic access

Dam Road will be the primary construction access route during the upgrade. This route is expected to be open from mid-July. Until then, all vehicles will use the existing access to the Capalaba Water Treatment Plant via Larbonya Crescent and Willowie Crescent.

The crossing of Tingalpa Creek will use a temporary bridge structure, similar to those used by the military and for humanitarian and emergency access routes. This will reduce the environmental impacts associated with the creek crossing and the probability of inundation from spillway flows. The temporary bridge structure will be 55m long, about the length of four and a half city buses, and will safely transport 44 tonne trucks from Dam Road to the work site. The temporary bridge structure will be higher and more resilient than a typical creek crossing, but will still be unsafe to use during large flood events.

Next steps

Site establishment works will take four to six weeks. Heavy construction is expected to start in July.

We will keep the community informed of progress with the project and any expected impacts.

We appreciate your patience during these essential works.