# Centenary Motorway

The M5 (Centenary Motorway) is a 43-kilometre (27 mi) motorway in the western suburbs of Brisbane, Australia.
It starts as a two-lane arterial road at Yamanto, travelling to Springfield, where it becomes a two-lane highway and travels across the M2 Logan Motorway at Ellen Grove (formerly Metroad 4 / M4) and ends at Kenmore where it changes its name to the M5 Western Freeway. It features eight interchanges, the major ones being with the M7 Ipswich Motorway (formerly Metroad 2 / M2) in Darra and another at Sinnamon Park. The Centenary Freeway links traffic from the west to the north of Brisbane.
In October 2012, it was announced that the planned bikeway from Springfield to the existing bikeway along the Motorway would not proceed. Instead the existing two lane road would be expanded by two lanes.

## Designation as motorway

Almost the entire length of road is of motorway standard and has now been designated as such. Those sections not of freeway standard are being upgraded and re-designated over time. As of October 2006 the blue hexagonal Metroad 5 signage is getting progressively replaced with M5 signage. Officially the M5 starts/ends at the Sumner Road Interchange and not at the M7/M5 Interchange. This will change when the M7/M5 Interchange is upgraded.
The M5 has been identified to receive a major upgrade in the South East Queensland Infrastructure Plan and Program. Additional lanes will be added to accommodate Transit Lane.

## Extension

The motorway was extended to Yamanto and opened in late June 2009. The extension cost $366 million and was opened by Anna Bligh. Five bridges along the new section were named after local people, places, events and football teams, including botanist Lloyd Bird and the Box Flat Mine disaster.

## Upgrades
### Duplicate Centenary Bridge

A project to duplicate the Centenary Bridge commenced construction on 20 April 2023, with a current investment of $298.5 million.

### Logan Motorway interchange upgrade

A project to upgrade the interchange with Logan Motorway, at a cost of $15 million, was in the detailed design stage in November 2021.

## Interchanges

The interchange with the Logan Motorway is crossed by a viaduct for the two track railway crossing of the Springfield railway line. The crossing is more than 800 metres long and has been designed so that its piers do not obstruct planned upgrades of both roads.
| LGA | Location | km | mi | Destinations | Notes |
| Brisbane | Indooroopilly | 0 | 0.0 | Western Freeway (M5) north–east / Moggill Road (State Route 33) north–west – Brisbane, Kenmore, Indooroopilly | Northern motorway terminus: continues as Western Freeway; northbound exit only to Moggill Road |
| Brisbane | Indooroopilly–Fig Tree Pocket–Chapel Hill–Kenmore quadripoint | 2 | 1.2 | Fig Tree Pocket Road – Fig Tree Pocket | Parclo interchange |
| Brisbane River | Brisbane River | 4 | 2.5 | Centenary Bridge | Centenary Bridge |
| Brisbane | Jindalee | 4.5 | 2.8 | Sinnamon Road | Northbound entrance and southbound exit |
| Brisbane | Jindalee | 4.7– 5 | 2.9– 3.1 | Seventeen Mile Rocks Road | No northbound entrance |
| Brisbane | Mount Ommaney–Sinnamon Park boundary | 6 | 3.7 | Dandenong Road west / Glen Ross Road east | Roundabout interchange |
| Brisbane | Jamboree Heights–Sumner–Darra tripoint | 7 | 4.3 | Sumners Road | |
| Brisbane | Darra | 8 | 5.0 | Ipswich Motorway (M7) – Oxley, Brisbane, Ipswich, Toowoomba | No northbound exit to M7 westbound; no southbound entrance from M7 eastbound |
| Brisbane | Richlands | 9.5 | 5.9 | Garden Road (State Route 30) – Richlands, Forest Lake | Southbound exit and northbound entrance |
| Brisbane | Richlands | 10 | 6.2 | Progress Road (State Route 30) – Wacol, Woodridge | Northbound exit and southbound entrance |
| Brisbane | Forest Lake | 13 | 8.1 | Logan Motorway (M2) – Ipswich, Gold Coast, Logan Central | No southbound exit to M2 north–westbound; no northbound entrance from M2 south–eastbound |
| Ipswich | Springfield–Springfield Lakes boundary | 20 | 12 | Springfield Parkway west / Springfield Lakes Boulevard east | |
| Ipswich | Springfield Lakes | 21 | 13 | Springfield–Greenbank Arterial – Greenbank, Springfield Central | Southbound exit only |
| Ipswich | Springfield Central–Augustine Heights boundary | 22 | 14 | Centenary Highway (A5) west / Augusta Parkway north / Sinnathamby Boulevard south – Warwick, Redbank Plains, Springfield Central | Southern motorway terminus: continues as Centenary Highway |
| Incomplete access ||||||