Pedestrian bridge beams over a creek, Wide Bay
Two 760 kg beams set across a protected creek where no crane pad could be built on either bank.
PA-2418 · Tinana Creek, Wide Bay · 2022-10-11
The constraint
Why this lift needed a helicopter
Both banks were vegetated riparian zone with no permissible crane platform.
A temporary causeway needed environmental approval and would have been removed weeks later.
Beam tolerance at the abutments was 15 mm.
The lift
How it was flown
- Load weight
- 760 kg
- Aircraft
- AS350
- Line length
- 50 m
- Crew
- 7
- Exclusion zone
- 70 m
- Lift cycles
- 2
- Beams were staged on a sealed carpark 700 m downstream and rigged with a two-point spreader.
- Survey crews set targets on both abutments so the pilot could fly to a marked line.
- Each beam was walked into bearing by tag line with fitters on both abutments.
The numbers
Time, cost and disruption
- Helicopter time on site
- 1.8 hrs
- Flight time
- 0.9 hrs
- Crane alternative
- Temporary causeway $148,000 + permits
- Road closures
- 0
On site
Photos
Also filed
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