Flagstaff Road
Flagstaff Road | |
|---|---|
| File:Main South Road at Darlington SA.jpg | |
Flagstaff Road from Main South Road, showing gantry lights set for two lanes uphill (southbound) | |
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| Coordinates |
|
| General information | |
| Type | Road |
| Location | Adelaide |
| Length | 3.2 km (2.0 mi)[1] |
| Major junctions | |
| North end | File:AUS Alphanumeric Route A14.svg Marion Road Darlington, South Australia |
| File:AUS Alphanumeric Route A13.svg South Road | |
| South end | Happy Valley Drive Flagstaff Hill, South Australia |
| Location(s) | |
| Region | Southern Adelaide[2] |
| Restrictions | |
| General | Centre lane direction depends on time of day |
Flagstaff Road is an arterial road in the southern suburbs of Adelaide in South Australia, Australia. It is one of the roads that carries commuter traffic between the city on the coastal plain and residential suburbs in the Adelaide Hills.
Route
The northern end branches off of South Road at Darlington at a traffic light intersection with Marion Road opposite. Most of the road is in the suburb of Flagstaff Hill. The southern end is a roundabout where Black Road crosses, and Happy Valley Drive continues from Flagstaff Road towards the suburb of Happy Valley. There are no major intersections along its length, only residential streets and local collectors.
The part of Flagstaff Road above the escarpment is a divided road with two lanes in each direction. Prior to widening, the steepest section was three lanes, with the middle lane reversible to match peak traffic flow. At the bottom, there are two lanes feeding into it from the traffic lights, and a total of five lanes feeding traffic towards Marion Road and South Road (northbound).
History
The section with three lanes was upgraded to this standard in the 1980s, to address increasing traffic due to expanding suburbs such as Flagstaff Hill and Aberfoyle Park. The overhead lane direction indicators were upgraded from green arrows to white ones using newer technology in 2013.[3] The 2019 South Australian state budget allocated A$32.9 million to widen the road and remove the reversible lane. Works started in early 2021, and were open to traffic in mid-2022.[4]
Intersections
Flagstaff Road is entirely contained within the City of Onkaparinga local government area.[5]
| Location[1][6] | km[1] | mi | Destinations | Notes | |
|---|---|---|---|---|---|
| Darlington | 0.0 | 0.0 | File:AUS Alphanumeric Route A14.svg Marion Road (A14 north) – Plympton, Brooklyn Park | Northern terminus of road | |
| File:AUS Alphanumeric Route A13.svg Main South Road (A13) – St Marys, Reynella, Old Noarlunga | |||||
| 0.25 | 0.16 | begin three lanes | |||
| Flagstaff Hill | 1.0 | 0.62 | Begin dual carriageway | ||
| 3.3 | 2.1 | Black Road – Flagstaff Hill | |||
| Happy Valley Drive – Happy Valley | Southern terminus of road | ||||
| |||||
References
- ↑ 1.0 1.1 1.2 Google (1 July 2022). "Flagstaff Road" (Map). Google Maps. Google. Retrieved 1 July 2022.
- ↑ "Location SA Map viewer with regional layers". Government of South Australia. Retrieved 16 June 2022.
- ↑ "Traffic Signal Uprgrade for Flagstaff Hill Road, Darlington". Department of Planning, Transport and Infrastructure. 15 May 2013. Retrieved 20 June 2019.
- ↑ "Flagstaff Road Upgrade". Department of Infrastructure and Transport. Retrieved 1 July 2022.
- ↑ "Location SA Map viewer with LGA layers". Government of South Australia. Retrieved 16 June 2022.
- ↑ "Location SA Map viewer with suburb layers". Government of South Australia. Retrieved 16 June 2022.
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