Great South Road and Sylvia Park Road intersection upgrade
The intersection of Great South Road and Sylvia Park Road currently facilitates
the flow of between 30,000 and 37,000 vehicles per day. In the early 90s,
Auckland City identified the intersection as an area that needed to be upgraded
to regional arterial route standard.
An initial upgrade plan was prepared in 1994, but was subsequently reduced
following lower than predicted traffic growth after the completion of the south
eastern arterial route.
Physical work on the upgrade began in November 2002 and completed
in August 2004.
The project was announced winner of the Roads and Transport category at the
New Zealand Engineering Excellence Award 2006.
Improvements
The objectives of the $9.5 million upgrade are to improve the safety of the
intersection, and cater for increased traffic growth in the area. To achieve
these objectives, the upgrade will include:
- widening the road from three to five lanes at the intersection and
creating a better road layout
- construction of a new railway bridge to comply with current Tranz Rail standards
- construction of new footpaths and cycle lanes
- the introduction of a new traffic light phase for motorists turning right
from Great South Road into Sylvia Park Road, as well as a free left-turn
lane from Great South Road into Sylvia Park Road
- realigning the road level to provide for a safe 'line of sight' in the
area of the railway bridge and improved management of road surface
stormwater flow
- relocation of a number of utility services following completion of the
rail overbridge
- the implementation of new measures to control stormwater flooding and
wastewater treatment.
As well as providing improved traffic flows and traffic safety, an economic
analysis indicates that the work will prevent injuries and result in a saving of
about $20 million over a 25-year period.
Intersection map
| Key |
 |
Temporary bridge - capacity reduced - one lane
in each direction. |
 |
Temporary speed restrictions (30km p/h) and
reduced capacity. |
 |
No right turn from Great South Road into Sylvia
Park Road. No left turn from Sylvia Park Road into Great South Road. All
other traffic movements possible. |
 |
Work area. |
 |
All traffic movements available - capacity
reduced. |
 |
Vesty Drive - alternative route to/from
motorway. |
Aerial photograph of intersection
