Legislative Assembly for the ACT: 2003 Week 3 Hansard (23 October) . . Page.. 4088 ..
Is the area now safe for motorists;
Are there any other sections of road in the ACT that may be threatened by landslip risk, and if so, what are those areas;
How many landslips along various sections of road have occurred in the ACT in previous years and where have these occurred;
Are there any particular residential areas in the ACT that may be subject to landslip risk and if so what are those areas;
How many landslips have occurred in residential areas in the ACT in previous years and if so, where have these occurred;
Has the risk of landslip in various areas of the ACT increased since the January 18 bushfires, and is this landslip risk linked to the loss of vegetation caused by the January 18 bushfires.
Mr Wood: The answers to the member's questions are as follows:
Temporary concrete barriers were placed on 12 September 2003, in locations where slope instability posed a safety risk to road users. The barriers have been installed to prevent debris falling onto the road or passing vehicles;
The cost was $4,685 for the installation of the barriers and temporary traffic management;
The barriers were installed in accordance with the geotechnical consultant's recommendation to ensure safety for road users;
Three other sites are currently receiving attention for landslip risk. These are:
Apollo Road which is currently closed due to the landslip risk,
Corin Road (above Gibraltar Falls) which has a section with temporary barriers,
Paddy's River Road at Murray's Corner which has temporary barriers, and
Tenders for remedial works to the above sites have been advertised and all works are expected to be completed by February 2004.
Over the past 20 years there have been numerous landslips and rock falls on roads throughout the ACT. These roads include Corin Road, Boboyan Road, Hindmarsh Drive, Morsehead Drive and Erindale Drive. The significance of these events has varied from a few large rocks to substantial quantities of debris. In all cases, geotechnical advice has been sort and rectification works completed to ensure public safety;
Officers from Roads ACT are unaware of any potential landslip sites which threaten residential areas;
Officers from Roads ACT are unaware of any landslips occurring in ACT residential areas in previous years; and
The January 18 bushfires significantly impacted on the stability of road cuttings by destroying the vegetation and ground cover in rural areas. The subsequent rainfall events caused erosion of the denuded soils. This has led to the landslip risks that are being addressed.