Project manager Simon Potts said the staging platform growing on the east side of the Clutha River would be used to sink piles and build the new bridge, while carrying the plant and equipment required.
Since it began in January, "good progress" had been made on the $25 million project, which replaces the existing 137-year-old single-lane bridge.
"Preparatory work has included utilities relocations such as power and drainage. Piling work is ongoing for the new bridge abutments and piers. There’s also been a considerable amount of earthworks carried out on the new bridge approaches on both sides of the Clutha River," Mr Potts said.
Last month, short sections of Rongahere Rd and Weardale St were closed permanently, providing land for the new bridge approaches on the east and west sides of the river.
The bridge is due to open in 2024.
