# State Circle

State Circle is a circular road surrounding Capital Hill in the centre of Canberra, Australia's capital city. It is the outermost of the three concentric roads on the hill, with Capital Circle and Parliament Drive located within State Circle. Capital Circle is a bi-directional four-lane road with most intersections being signalised and at-grade. The speed limit is 70 km/h.
It is named for the states of Australia. Roads named for each of Australia's state capitals are also among those that intersect or terminate at State Circle. The main roads leading from the circle are Commonwealth Avenue, Kings Avenue, Adelaide Avenue, and Canberra Avenue.
State Circle featured prominently on Walter Burley Griffin's plans for Canberra. It was originally envisaged there would be a number of circular concentric roads around Capital Hill. Only Capital Circle and State Circle were ever fully completed. It is considered a main avenue, and a road of national significance, by the National Capital Authority.

## Intersections & Interchanges

As State Circle is a circular road, the table below lists all intersections and interchanges starting at Commonwealth Avenue interchange and proceeding clockwise.
| District | Location | km | mi | Destinations | Notes |
| Canberra Central | Capital Hill, Yarralumla, Parkes | 0.00 | 0.00 | Commonwealth Avenue – City, Parkes | Partial trumpet interchange, northbound anticlockwise exit, and southbound clockwise entry only. |
| Canberra Central | Capital Hill, Parkes | 0.01 | 0.0062 | Capital Circle overpass (southbound) | Capital Circle overpass (southbound) | Capital Circle overpass (southbound) |
| Canberra Central | Capital Hill, Parkes | 0.19 | 0.12 | Federation Mall overpass (northbound) | Federation Mall overpass (northbound) | Federation Mall overpass (northbound) |
| Canberra Central | Capital Hill, Parkes | 0.28 | 0.17 | Federation Mall overpass (southbound) | Federation Mall overpass (southbound) | Federation Mall overpass (southbound) |
| Canberra Central | Capital Hill, Parkes, Barton | 0.50 | 0.31 | Kings Avenue – Parkes, Barton, Parliament House | Signal-controlled crossroads |
| Canberra Central | Capital Hill, Barton | 0.75 | 0.47 | Brisbane Avenue – Barton | Signal-controlled crossroads |
| Canberra Central | Capital Hill, Barton, Forrest | 1.00 | 0.62 | Sydney Avenue – Barton, Forrest | Signal-controlled T-intersection |
| Canberra Central | Capital Hill, Forrest | 1.25 | 0.78 | Canberra Avenue – Queanbeyan, Cooma, Forrest | Signal-controlled crossroads |
| Canberra Central | Capital Hill, Forrest | 1.40 | 0.87 | Hobart Avenue – Forrest | Signal-controlled T-intersection |
| Canberra Central | Capital Hill, Forrest, Deakin | 1.70 | 1.06 | Melbourne Avenue – Forrest, Deakin, Red Hill Lookout, Federal Golf Course, Parliament House | Signal-controlled T-intersection |
| Canberra Central | Capital Hill, Deakin, Yarralumla | 2.00 | 1.24 | Adelaide Avenue – Woden, Tuggeranong, Deakin, Yarralumla | Modified trumpet interchange, exit and entry ramps in place for both clockwise and anticlockwise lanes, but only for traffic heading to/from the west. |
| Canberra Central | Capital Hill, Yarralumla | 2.25 | 1.40 | Perth Avenue – Yarralumla | Uncontrolled T-intersection |
| Canberra Central | Capital Hill, Yarralumla | 2.50 | 1.55 | Rhodes Place – (No through road) | Uncontrolled T-intersection |
| Canberra Central | Capital Hill, Yarralumla | 2.75 | 1.71 | Flynn Drive – City, Yarralumla, Parkes, Lennox Gardens | Uncontrolled T-intersection |
| Canberra Central | Capital Hill, Yarralumla | 2.99 | 1.86 | Capital Circle overpass (northbound) | Capital Circle overpass (northbound) | Capital Circle overpass (northbound) |
| Canberra Central | Capital Hill, Yarralumla, Parkes | 3.00 | 1.86 | Clockwise loop completed, refer back to top of table | Clockwise loop completed, refer back to top of table | Clockwise loop completed, refer back to top of table |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Incomplete access ||||||