Thomas Road is a major west–east road in the far southern suburbs of Perth, Western Australia, connecting Rockingham Road (part of Highway 1) in Kwinana's industrial area with Kwinana's urban area, before bridging Perth's agricultural fringe to meet the South Western Highway in Byford, just south of Armadale.[1] Thomas Road was the terminus of the Kwinana Freeway from 1993 until 2002, and presently serves as the terminus of Tonkin Highway after its extension beyond Albany Highway in 2003.
Thomas Road | |
|---|---|
 | |
| Intersection of Rockingham Road and Thomas Road | |
 | |
| General information | |
| Type | Road |
| Length | 23 km (14 mi) |
| Opened | 1950s |
| Route number(s) |  State Route 21 |
| Major junctions | |
| West end |  Rockingham Road (National Route 1), Kwinana Beach |
| |
| East end |  South Western Highway (State Route 20), Byford |
| Location(s) | |
| Major suburbs | Kwinana Beach, Casuarina, Oakford |
Thomas Road forms the entirety of State Route 21.[2]
Major intersections
| LGA | Location | km | mi | Destinations | Notes |
|---|---|---|---|---|---|
| Kwinana | Kwinana Beach–Medina boundary | 0.0 | 0.0 | Rockingham Road (National Route 1) – Fremantle, Spearwood, Rockingham, Mandurah | Western terminus at signalised T-intersection |
| Postans–Orelia–Medina tripoint | 2.2 | 1.4 | Gilmore Avenue – Kwinana Town Centre, Leda, Rockingham | Signalised T-intersection | |
| Bertram–The Spectacles boundary | 6.0 | 3.7 | McDowell Lane north/Johnson Road south – Wellard | McDowell Lane is a give way LILO intersection. Johnson Road a signalised T-intersection | |
| Anketell–Casuarina–The Spectacles–Bertram quadripoint | 6.1– 6.3 | 3.8– 3.9 |  Kwinana Freeway (State Route 2) – Joondalup, Perth, Mandurah, Bunbury | Signalised diamond interchange | |
| Serpentine-Jarrahdale | Oakford | 13.3 | 8.3 | Anketell Road – Wandi, Anketell, Aubin Grove | Unsignalised T-interection |
| 14.2 | 8.8 |  Nicholson Road (State Route 31) – Cannington, Canning Vale, Harrisdale, Forrestdale | Being converted to roundabout. | ||
| 16.9 | 10.5 | Kargotich Road – Oldbury, Mundijong, Mardella | Being converted to roundabout. | ||
| 18.5 | 11.5 |   Tonkin Highway (State Route 4) – Muchea, Welshpool, Gosnells, Perth Airport | Signalised T-intersection. | ||
| Byford–Darling Downs boundary | 22.4 | 13.9 |  South Western Highway (State Route 20) – Armadale, Pinjarra, Bunbury | Eastern terminus at signalised T-intersection. | |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
See also
References
KML is from Wikidata