The 17 kilometre duplicated Sturt Highway between Gawler to Daveyston was open to traffic at the end of July. The works were completed some four months ahead of schedule and under budget. Savings from the project are being directed towards further improvements on the Sturt Highway.
Seppeltsfield Road to Greenock Road
Work to duplicate the section between Seppeltsfield Road and Greenock Road has begun.
The works include widening the carriageway to 4 lanes between Seppeltsfield Road and Greenock Road and the tapering of four lanes to two lanes just east of Greeenock Road and installation of wire rope within a seven metre wide median.
These works are expected to be complete in mid 2010, weather permitting.
Junction Upgrades and Overtaking Lane Extension
Construction of the first stage of the upgrade started in January 2007 and was completed in May 2007. The work included:
- Widening of the Murray Street junction (at Nuriootpa), including lighting, new sheltered right turn lane and extension of the existing left turn lane.
- Realigning of the Belvidere Road junction to improve sight distance, including lighting, new sheltered right turn lane and extension of the existing left turn lane.
- Extension of the existing overtaking lane adjacent to Moppa Road with relocated lighting at the Old Kapunda Road and Moppa Road junctions. The overtaking lane was extended for a length of 700m on the southern side of the highway to meet with the Old Kapunda Road junction.
Daveyston to Greenock Section
Construction work on the duplication of the Sturt Highway, between Daveyston and Greenock is complete. Work included:
- duplication to the south of the current road in the vicinity of Daveyston. Between Hempel Road and Bartels Road the duplication will be built either side of the current lanes, meeting with the existing highway at Bartels Road
- duplication of the Hempel Road overpass, south of the existing structure
- a seven metre wide central median with wire rope safety fence.
- full depth asphalt pavement
- eight hectares of vegetation planted.
Daveyston - Greenock Section Completed
Typical cross sections for landscaping have been developed for this section of the upgrade.
Gawler Interchange Duplication
Construction started in January 2008.
Duplication of the highway through the Gawler Interchange to the Scott Road junction and a new interchange bridge includes:
- construction of a two lane bridge over Main North Road, north of the existing bridge
- rearrangement of the access ramps, include:
- realignment of the east-bound left turn slip lane from Sturt Highway onto Main North Road
- right turn facility from the east-bound slip lane onto Main North Road
- right turn facility for west-bound vehicles from Main North Road onto the Sturt Highway
- duplication to the south of the existing highway from the Gawler Interchange to Scott Road, with a central median
- revegetation of the road verges and surrounds.
Gawler Interchange Duplication - artist impressions
Layout of new Gawler Interchange
Concrete beams lowered into place to form the deck of the new bridge over Main North Road
Gawler to Daveyston Duplication
Gawler - Daveyston section currently under construction
Construction of this section started in January 2008 with major works competed in July and the road open to traffic at the end of July 2009.
Features of this section include:
- duplication of 17 kilometres of highway between Scott Road at Kingsford to Daveyston Road at Daveyston
- 15 metre wide central median
- revegetation using native species
- the Nadjuri rest area catering for up to 12 B-double vehicles
- new minor truck rest area
- median openings at the junctions of the Sturt Highway with:
- Lienert Road and Wandel Road (stagged T-junction)
- Les Dunkley Road and Nurse Road - this will have a 30 metre wide median to allow storage of B-doubles
Road and Traffic Restrictions
The highway has been, and will remain open to traffic throughout the upgrade. However, some lane and speed restrictions will be in place.
Motorists are asked to take care when workers are on site.
Advanced roadwork signs are being used to alert motorists to speed and lane restrictions.
Construction work will generally occur between 7.00 am and 5.00 pm, Monday to Saturday.
Speed restrictions of 80 km/hour and 60km/hour may be in place, with further restrictions of 40km/hour and 25km/hour while workers are on site.