Mt Crosby Weir - Pier 7 Repair & Sluice Gates Upgrade

⁠⁠⁠Seqwater is seeking proposals for the Mt Crosby Weir - Pier 7 Repair and Sluice Gates Upgrade project.

The temporary and permanent works are:
* Design, furnish, fabricate transport, install, construct, maintain and remove (at the completion of the Works) temporary diversion structures and protective works
* Construct and maintain a temporary downstream cofferdam (including contouring banks)
* Design, furnish, transport, install, maintain and operate pumps (or other surface dewatering systems)

Pier 7 Repairs
* Concrete preparation - concrete demolition, excavation, scabble existing concrete, prepare / clean rock foundation, install foundation dowels, install dowels into concrete weir
* Construct a reinforced concrete buttress at Pier 7 and backfill with mass concrete

Sluice Gates Upgrade
* Fabricate and install a bulkhead upstream of existing sluice gates
* Fabricate, install and commission two new sluice gates at Pier 10 and 11 (requires fabrication and installation of an upstream bulkhead)
* Decommission sluice gates at Piers 8 and 9 by entombing in mass concrete (using upstream bulkhead)
* Procure and supply portable electrically powered gate actuator

Weir Bridge Guardrail Upgrade
* Fabrication of steel plates
* Welding of new plates to existing base plate
* Anchoring of extended based plates to outside bridge girders

For detailed information on the specific goods / services sought under this tender, please review the "Specification Documents" in "Section D".