Worked Example: A Weekend Crane Lift in a CBD Street, From Permit to Pack-Down

A crane lift road closure in a CBD street succeeds long before the crane arrives: approvals lodged weeks or months ahead, a joint planning meeting, a lift plan and TGS that agree on the exclusion zone, and a call system for holding people during each lift. On the day, the job is disciplined holds, constant inspections and reopening on time.

This is an example scenario, from first phone call to the street reopening. It is not a real builder, crane company, council or incident. It is written for builders, site managers and traffic control companies planning a weekend lift in a city street. It is not legal or engineering advice: the traffic guidance scheme (TGS) must be prepared by a suitably qualified person, and the lift plan is the crane company's. For an overview, start with our guide to traffic control for crane lifts.

The example job

Example scenario: a builder needs to lift new rooftop air-conditioning units onto a mid-rise office building in a CBD street.

• Street: a one-way, two-lane CBD street with footpaths both sides, a bus route, a loading zone and the entry to another building's basement car park on the same block.
• Crane: a large mobile crane standing in the street outside the building, with outriggers, mats and a slew area that crosses the footpath and part of the far lane.
• Lifts: several lifts of plant and rigging, plus removal of old units, estimated at several hours of lifting.
• Window: the approval allows a Saturday closure from early morning to early afternoon, with the street fully reopened by the end time.
• Closure: the TGS closes the block to through traffic, with a signed detour, managed access for the car park, and pedestrian control on both footpaths.
• Crew: a traffic control supervisor, four controllers (TC 1 to TC 4) and an implementer for the detour, alongside the crane crew, dogman and the builder's site supervisor.

Eight weeks out: the approvals timeline

The builder engages the traffic control company and the crane company together, so the TGS and the lift plan are built from the same drawing. Here is how the example timeline runs; real lead times depend on the authority, so check current requirements.

For lead times and common reasons approvals are refused, see our guides to ROL lead times and council permits for road works.

Reading the conditions. When the approval arrives, the supervisor lists every condition on one page: start and end times, pedestrian access requirements, emergency access, bus arrangements, any noise or hours conditions, VMS requirements and who must be notified on the day. Conditions are easy to miss when they are buried in a long approval letter.

The planning meeting: who does what

A week out, everyone meets: builder, crane supervisor, dogman, traffic control supervisor and the neighbouring building's manager. They agree:

• The exclusion zone from the lift plan, marked on the TGS.
• The call system. The dogman tells the traffic control supervisor "load going up" before each lift and "load landed" after; the supervisor tells the controllers "hold pedestrians" and "release". Radio channel and backup agreed.
• Car park access. The neighbouring building's car park exit lies inside the closure. Vehicles can leave between lifts, escorted by TC 3, and are held during lifts.
• The bus route. The bus operator diverts buses for the day using the detour, as arranged under the approval.
• Emergency access. If an emergency vehicle needs the street, the crane crew lands or holds the load safely, controllers clear a path, and the emergency vehicle passes.
• Weather. The crane supervisor decides whether lifting can go ahead in the wind; that decision is theirs, not the traffic crew's. If lifting stops, the street stays closed until the approval end time or the builder calls the job off.
• Stop time. The last lift must finish with enough time to pack down the crane and open the street before the end time.

The day: set-up from 4:30 am

The traffic crew arrives before the crane. Pre-start: the TGS, detour, exclusion zone, call system, positions and escape routes, car park process, emergency access, radio check and SWMS sign-on.

Set-up order:

1. Detour signs from the END DETOUR point back to the start, so the detour is complete before the street closes.
2. VMS boards switched to the closure message.
3. Advance warning and ROAD CLOSED signs at the closure points, with barriers.
4. Permanent signs covered where the TGS shows, and the loading zone signed as unavailable.
5. Pedestrian management on both footpaths: signs, barriers and controller positions at each end of the affected section.
6. A final check that the street is clear of parked vehicles inside the closure. Any vehicle still parked is dealt with as the approval allows, usually through council or the police, not by the crew.

The crane arrives with its escort and sets up inside the closed area. The crew holds pedestrians while the crane manoeuvres and while outriggers and mats go down.

Lift by lift: holds and releases

Each lift follows the same pattern.

1. Dogman: "Load going up."
2. Supervisor: "Hold pedestrians, north and south." TC 1 and TC 2 hold the footpath on the building side; TC 4 holds the far footpath where the slew crosses it.
3. TC 3 confirms the car park exit is held.
4. Controllers confirm: "North holding", "South holding", "Car park holding".
5. Supervisor to dogman: "All held, clear to lift."
6. Lift happens.
7. Dogman: "Load landed."
8. Supervisor: "Release pedestrians." Controllers release.

The supervisor records each lift's hold and release times. Holds are kept short; if a lift will take a long time, the builder and crane supervisor say so before it starts, so pedestrians can be sent around on the far footpath instead of waiting.

What goes wrong on the day

6:40 am. Rideshare drop-off. A rideshare car drives around the ROAD CLOSED barrier to drop off a passenger at the building's door. TC 1 stops it before it reaches the exclusion zone and redirects it out. The supervisor adds a controller presence at that closure point for the rest of the morning.

7:30 am. The café opens. A café on the far footpath opens and customers start to queue across the footpath, inside the area TC 4 needs to hold during lifts. TC 4 explains the holds to the café owner, who moves the queue along the wall. Telling businesses in advance avoided a bigger problem, but this one was missed in the notices.

9:10 am. Car park exit. Three vehicles want to leave the basement car park during a long lift. TC 3 holds them, explains the wait, and escorts them out between lifts. One driver is upset and abusive. TC 3 stays calm and records it.

10:45 am. Wind. The crane supervisor pauses lifting because gusts exceed their limit. The traffic crew keeps the closure in place, and with no load in the air, pedestrians use the protected routes without holds. The builder and crane supervisor check the remaining time and agree a stop time for the last lift.

11:20 am. Ambulance. An ambulance needs to reach a building at the far end of the block. No load is in the air. The supervisor opens the closure point, TC 2 walks ahead to clear the path past the crane, and the ambulance passes. Emergency access is never negotiable.

12:30 pm. Last lift. Lifting resumes after the wind drops; the final lift finishes with enough time to pack down. The remaining old unit is left for another day rather than risk the end time.

Pack-down and reopening

The crane packs up and leaves first, with pedestrians held during its moves. Then the crew packs down in reverse: pedestrian management, closure barriers and ROAD CLOSED signs, permanent sign covers, VMS messages switched, detour signs from the start of the detour to the END DETOUR sign. The supervisor walks and drives the block, checks the road and footpath for debris, oil and damage, and confirms the bus operator can resume the normal route.

For the rules behind the work, check SafeWork NSW and Safe Work Australia for crane and public safety duties, and Transport for NSW for road occupancy in NSW. Our guide to CBD construction traffic management covers longer-running city sites.

Next steps

Before your next CBD lift, start approvals early, list every condition on one page, and agree the hold and release calls with the crane crew before the day. Traffic control companies can allocate the crew, check fatigue limits and collect signed dockets from the street in TrafWise.