Monthly construction updateTown Hall StationDecember 2021 and January 2022

We’re taking a break

The Metro Tunnel Project will take a break from construction from Wednesday 22 December 2021. Works to remove the Flinders Quarter acoustic shed will recommence on Tuesday 4 January 2022. All other works will recommence from 10 January 2022.

The site will be monitored by security during the closure. Members of the project team will be on call during this time. If you have any queries, please phone the Metro Tunnel Project Information Line on 1800 105 105.

Construction partner:

Design &Construction

Major construction is continuing in the CBD at the site of the future Town Hall Station. This update provides an outline of current and upcoming works in December 2021 and January 2022.

Construction snapshot

Construction works within the Town Hall Station precinct during December 2021 and January 2022 include:

— Structures, lining and excavation works within the central cavern and rail tunnels

— Shaft construction and acoustic shed and deck removal works within the Flinders Quarter site

— Backfill and utility relocation works within the Flinders Link site

— Steel bridge widening works at the Federation Square site.

Further information on these works can be found overleaf or at metrotunnel.vic.gov.au

Normal construction hours7am to 6pm, Monday to Friday 7am to 1pm, Saturdays.

24 hours24 hour works are sometimes required during peak construction activities.

Out of hoursSome works are required to take place out of normal construction hours.

When are we working?

Works in your areaStructures, lining and excavationCity Square, Federation Square and Flinders Quarter sites24-hours, Monday to Sunday, ongoing

— Works to construct the underground station platform are continuing in the Town Hall Station precinct

— These works involve the installation of waterproofing materials, steel, and concrete within the central cavern and rail tunnels

— Works to excavate undertrack crossings between the shafts and cavern will continue during December and January. These works will require backfill and spoil removal.

— There will be regular truck movements to deliver steel and concrete, and remove spoil from the acoustic sheds

— These works are expected to generate low levels of noise and vibration.

Steel Bridge Widening Federation Square Site and Flinders Street 5am to 10pm, Monday to Sunday for up to 10 days in December

— Works to widen the steel bridge entrance into the eastern end of the Federation Square site will take place in December

— Works will include removal and replacement of the existing steel bridge segments, welding, use of a mobile crane and concreting works

— These works will require the closure of one westbound lane of Flinders Street between Russell Street and Princes Bridge for one day from 5am to 4pm in early December.

Equipment demobilisationFederation Square Site and Flinders Street10pm to 5am for up to 2 nights in late January or early February

— Works to demobilise equipment from the Federation Square site will take place for up to two nights in late January or early February using a mobile crane parked on Flinders Street westbound

— These works will require a full overnight closure of Flinders Street westbound between Russell Street and Princes Bridge with traffic management in place for up to two nights

— These works are expected to generate periods of low-level noise.

Station build-out works City Square site (within the acoustic shed) 24-hours, Monday to Sunday, ongoing

— Works will continue to build the slabs, walls, and columns within the City Square shaft

— These works involve the installation of waterproofing materials, steel, and concrete

— There will be regular truck movements to deliver steel and concrete to the acoustic shed

— These works are expected to generate low levels of noise and vibration.

Shaft constructionFlinders Quarter site ExcavationOngoing 7am to 10pm, Monday to Friday 7am to 6pm Saturdays 8am to 6pm, Sundays

Excavated Material Removal 6am to 12am, Monday to Friday 6am to 6pm Saturdays 6am to 6pm Sundays

Concrete pours 7am to 12am, Monday to Fridays (as required)

Concrete finishing works6pm to 7am, Monday to Saturdays (as required)

— Shaft excavation involves the use of excavators, a tower crane, crawler cranes and trucks to remove excavated material from the site

— Excavators with hammer attachments will conclude by 9pm, and excavators with bucket attachments will conclude by 12am on weekdays

— These works will take place underneath the ground floor slab and are expected to generate some periods of high level noise and vibration

— The removal of excavated material from excavation and works requires the use of trucks, excavators, and a tower crane

— Trucks will access the Flinders Quarter site via the Swanston Street driveway and egress via the Flinders Street driveway

— These works are expected to generate low levels of noise, intermittent periods of medium noise may be generated when using the tower crane.

— Plunge columns underneath the groundfloor slab will continue to be removed using oxy torches and jackhammers, these works are expected to generate intermittent periods of medium levels of noise and vibration

— Construction of the shaft floors, walls and columns involves steel fixing, waterproofing, installing formwork and concrete pours

— Steel fixing, waterproofing and formwork installation works will continue underneath the ground floor slab until 10pm on weekdays and between 8am and 4pm on Saturdays and Sundays. These works involve the use of hand tools, diesel generators, power tools, a telehandler, and a tower crane, and are expected to generate low levels of noise

— Concrete pours must be continuous to ensure structural integrity and therefore may occasionally continue outside of standard construction hours

— Concrete pours and concrete finishing works involve regular deliveries, and the use of concrete trucks, concrete pumps, concrete vibrators, diesel generators and diesel-powered concrete finishing equipment

— Concrete pours are expected to generate medium levels of noise and vibration, and concrete finishing works are expected to generate low levels of noise and vibration

— The use of a tower crane may generate intermittent periods of medium levels of noise

— Where possible, every effort will be made to undertake concrete pours during standard construction hours to minimise disruption to surrounding properties.

Oversize deliveries Flinders Quarter site 10pm to 7am, throughout December 2021 and January 2022

— Oversize trucks with deliveries will continue to access the Flinders Quarter site via the Swanston Street driveway

— Due to road permit requirements, large plant will occasionally be delivered and demobilised from the site outside of standard construction hours

— Oversize deliveries require the use of semi-trailers, trucks, and a tower crane and are expected to generate low to medium levels of noise

— Directly impacted stakeholders will be provided more information prior to deliveries taking place outside of standard construction hours.

Acoustic Shed removal works Flinders Quarter Site 6am to 10pm, Monday to Friday 6am to 6pm Saturdays, Ongoing These works will commence in December until Wednesday 22 December 2021 and recommence on Tuesday 4 January

— Works will commence to remove the acoustic shed in mid-December

— Works will commence on demolishing the deck over shaft A in January 2022

— Works to demolish the acoustic shed and deck will involve intermittent use of the tower crane, mobile cranes, access equipment, rattle guns and excavators

— These works will require some intermittent narrowing of the footpath on Swanston Street outside the Flinders Quarter site during acoustic shed removal in January 2022

— These works may generate some periods of high-level noise.

— These works are expected to generate some periods of medium level noise.

Flinders Link pedestrian connection construction Flinders Street site7am to 6pm, Monday to Friday, and 7am to 1pm, Saturdays, ongoing

— Works to construct the future underground pedestrian connection within the Flinders Street site will continue throughout December 2021 and January 2022.

— These works will involve backfill using vibratory rollers and excavators. These works are expected to generate medium to high levels of vibration and some periods of medium level noise.

— Works will also take place to relocate a watermain and stormwater line within the Flinders Link site during January 2022. These works will include the use of non-destructive digging, saw cutting and generators with some periods of high-level noise.

Traffic and transport impacts — Closure of one westbound lane of Flinders Street between Russell Street and Princes Bridge for steel bridge widening works from 5am to 4pm for one day in early December

— Intermittent narrowing of the Swanston Street western footpath outside the Flinders Quarter site during acoustic shed removal works in January 2022.

Ongoing — Ongoing closure of Flinders Street eastbound lanes between Swanston and Elizabeth streets

— Ongoing long-term closure of the southern footpath on Flinders Street adjacent to the Federation Square site, with pedestrian diversions in place through Federation Square

— Closure of the left turning lane from St Kilda Road to Flinders Street

— Temporary closure of the Flinders Street north-south pedestrian crossing between St Paul’s Cathedral and Federation Square

— Temporary holding of traffic on Flinders Lane, Swanston, and Collins streets for up to three minutes to enable the delivery of equipment and materials

— Ongoing use of boom gate and swing gate controls to pedestrian and cyclist traffic on Flinders, Swanston, and Collins streets to facilitate safe truck ingress and egress

— Intermittent slowing and stopping of traffic on Collins Street between Russell and Swanston streets for deliveries to the City Square site

— Intermittent stopping of pedestrians on the corner of Swanston Street and Flinders Lane for the egress of construction vehicles

— Concrete trucks will intermittently park in the loading bay on Collins Street, adjacent to the City Square site for up to 30 minutes to enable concrete testing to take place.

Indicative only

LegendWork sitesConcrete testing Footpath closureShaft A – acoustic shed removal

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Flinders Quarter site shaft construction

Underground structures and lining works

Flinders Link pedestrian connection construction

Flinders Quarter Acoustic shed and deck removal

City Square site Station build-out works

City Square site Tower crane installation works

City Square Acoustic Shed removal works

City Square concrete pump and gantry installation works

Look ahead for 2021 - 2022December January February March April

Business support

While the new Town Hall Station will be a significant boost for the local area, construction activities can impact local businesses. In response to this, our Business Support Team assists businesses through the disruption and any permanent changes that will take place.

We hope you will join us in supporting the Flinders Quarter LOOK.STOP.SHOP Christmas and the businesses around our Town Hall Station sites. Please see the insert within this notification for more information. We look forward to promoting more business precincts and individual businesses in the coming months. We look forward to promoting more local businesses as the project progresses.

More informationTo find out more about the Metro Tunnel Project:

metrotunnel.vic.gov.au

1800 105 105 (24 hours a day, 7 days a week)

Rail Projects Victoria PO Box 4509, Melbourne, VIC 3001

It should be noted that this information is current at the time of printing, however due to unforeseen circumstances, changes may occur. Please visit railprojects.vic.gov.au for the latest updates.

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Construction partner:

Design &Construction

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