4895_RAL20-0020Response

RAL20/0020 Reconfiguration of a Lot: Response to Information Request – Report                   9




Figure 5: Lot 429 Property Access: road reserve crossover as viewed from road.

4.1.2.2.3 Required safety improvements
The driveway crossover is like many existing property crossovers along Cooroy Belli Creek
Rd; gravelled only from the road shoulder to the property boundary. Notwithstanding this
precedent, certain improvements to the crossover will increase the level of safety for the
property owner and road users, particularly considering the sight distance limitations to traffic
in the outbound direction. The following recommendations are made to improve safety:

     •   Take up existing wearing course and base course to a minimum of 150mm depth plus
         profile as required to provide for a setback invert:
     •   Reform the crossover to provide a 3% fall to an invert at minimum 2.8m from the
         sealed road shoulder in accordance with RS-056 Driveways – Rural Driveways and
         direct fall of invert to connect with culvert outlet/drain – this will reduce quantity of
         runoff flowing onto the main road during rain;
     •   Clean out adjacent table drain to ensure good flow to culvert;
     •   Amend driveway longitudinal profile as required to conform with Typical Driveway
         Section – Road in Cut as shown on RS-056 Driveways – Rural Driveways.
     •   Reinstate a 150mm thick basecourse of compacted Type 2.1 gravel in accordance
         with minimum formation requirements and provide a 2-coat bitumen seal for full extent
         of crossover up to the property boundary per RS-056 Driveways – Rural Driveways
     •   Install a guidepost in front of each culvert headwall for night visibility.
It is also recommended that traffic advisory warning signage is installed at the corner of the
outbound lane just past the access to Lot 49 (approximately 300m ahead of the corner – refer
to Figure 9). This will also alert drivers to the hidden property access on the opposite side of
road between the Lot 49 and Lot 429 accesses, which has even worse sight distance. The
following advisory signage is required:




                                                                                  Long View
                                                                                  Consulting Engineers