There is a whole bunch of information from the City of Perth website with regards to getting in and out of the city, as well as what roads will be closed.
This from the city's website:
Transperth offers plenty of easy options to get to and from the City of Perth Australia Day Skyworks using public transport.
Due to the large crowds anticipated on Australia Day, Transperth recommends you plan your journey and allow plenty of travelling time.
For details on all specific Transperth services operating for Australia Day please visit transperth.wa.gov.au or call the Transperth InfoLine on 13 62 13 (TIS: 13 14 50).
Timetabled and additional bus services will be operating on a Sunday/Public Holiday timetable. A number of bus services will be required to deviate from their normal route due to road closures.
Timetabled and additional train services will be operating on all lines.
After Skyworks, at 8.30pm, train services will operate from the following locations in the city:
Elizabeth Quay Station: Mandurah Line passengers only.
Perth Underground: Joondalup Line passengers only. Enter from Murray St Mall.
Fremantle Line: Platform 7
Armadale Line: Platform 5
Thornlie Line: Platform 4
Midland Line: Platform 8/9
Transperth ferry services will not operate from 12pm onwards due to the closure of the Swan River.
Free Event Transport Service
To facilitate access to the City of South Perth Celebration Zone, the City will be providing a free shuttle service between the George Burnett Leisure Centre (GBLC: Manning Rd, Cnr Elderfield Rd, Karawara), the City of South Perth Civic Centre (Cnr Sandgate St and South Tce, South Perth) and the event zone.
The shuttle buses will run approximately every 10 minutes back and forth between 2-9.30pm, but not during the fireworks (7.30-8.30pm).
Both GBLC and the Civic Centre are easily accessible from the Kwinana Freeway and have ample parking facilities.
Why not ride in and avoid the traffic? Free valet bicycle parking is available on Langley Park, near Victoria Avenue and in the Celebration Zone, South Perth opposite Forrest Street (see map). Don’t forget to bring a bike lock.
For a copy of the 2018 South Perth Australia Day Road Closure and Parking Map: visit the City’s website at www.southperth.wa.gov.au or call the Customer Focus Team on 9474 0777.
The Narrows Bridge eastern footpath will be closed all day on Australia Day.
Pedestrians and cyclists will be directed onto the western footpath.
Road Closure Information
All road closures are implimented on Australia Day (26 January) only, no road closures are implemented in the days prior to or after the event.
6am Road Closures
All roads into Kings Park are closed on Australia Day from 6am. Fraser's Restaurant clients with vehicle passes, tour coaches and taxis can get to the main car park via Saw Ave and May Dr. Motorists with ACROD permits will also be permitted.
City of Perth
Cliff St, Bellevue Tce and Mount St between Cliff St and the Freeway overpass will be closed to the public. Access will be maintained for residents.
10am Road Closures
At 10am Taylor St, Garland St, McCallum Lane and Ellam St will be closed. Gloucester St, eastbound between Canning Highway and Armagh St will also be closed at 10am.
12noon Road Closures
City of South Perth
The Kwinana Freeway exit ramps (Northbound and Southbound) and the roads bounded by Labouchere Road, Angelo Street, Douglas Avenue, Canning Highway and Ellam Street will be closed from 12.00noon to 10.30pm. Entry into Way Rd from Canning Highway will be closed from 12noon.
Unless you reside in this area, access will only be granted by providing the traffic controllers with a City of South Perth approved access permit.
City of Perth
The following roads will be closed:
- Mitchell Freeway and Kwinana Freeway on-ramps from William St.
- Kwinana Freeway on-ramps from Mounts Bay Rd at Point Lewis Roundabout.
- Mitchell Freeway off-ramps to Mounts Bay Rd and William St. Access to the City of Perth Convention Centre Car Park will remain open.
- Riverside Dr from the Causeway to Barrack St. Access to Point Fraser Car Park from the Causeway will still be available until 7pm.
- Terrace Rd westbound closed from Victoria Ave to Plain St.
- Barrack Square.
- Barrack St between The Esplanade and Riverside Dr.
- William St between Mitchell Freeway and Mounts Bay Rd.
- Barrack St southbound between St Georges Tce and The Esplanade.
- Geoffrey Bolton Ave, Enchantress Way and Duchess Way in Elizabeth Quay
- Hill and Bennett St’s between Adelaide Tce and Terrace Rd.
- Victoria Ave and Plain St between Terrace Rd and Riverside Dr.
- Plain St southbound between Adelaide Tce and Terrace Rd.
- Governors Ave.
7pm Road Closures
Malcolm St and Kings Park Rd, between Colin St and Harvest Tce, together with Havelock St between Ord St and Kings Park Rd will be closed from 7pm to allow spectators to leave Kings Park safely.
The CBD bounded by the foreshore, Milligan St, Wellington St and Victoria Ave will be closed from 7pm to allow safe pedestrian access to and from Perth Train Stations.
The following road closures in East Perth will also apply from 7pm:
- Adelaide Tce between Victoria Ave to Plain St.
- Adelaide Tce westbound Plain St to The Causeway.
- The Causeway westbound.
- Terrace Rd eastbound between Victoria Ave and Plain St.
- Burt Way.
- Hill and Bennett St’s between Hay St and Adelaide Terrace.
- Plain St between Adelaide Tce to Terrace Rd.
Shepperton Rd westbound from Teddington Rd to The Causeway and the Canning Highway slip lane to The Causeway will be closed from 7pm.
8:30pm Road Closures
Wellington St from Milligan St to Lord St, including the Horseshoe and Barrack St bridges will be closed at 8.30pm.
At the intersection of Canning Highway and Berwick St in Victoria Park, no right turns will be permitted from 8.30pm.
Private Car Parking
Vehicles in private car parks within the road closure areas are not permitted to exit the car parks until the roads are reopened, estimated at 10.30pm or when the Police deem it is safe to do so.
Traffic will be directed by WA Police to ensure minimum delays and safe exit from the city and South Perth. Please expect delays. Roads will re-open, when it is safe to do so, possibly as late as 10.30pm.
Written by: @dantheinternut