Traffic Engineering Correspondence

Table 9         Traffic Input Parameters (Local Roads)

  Traffic Parameter               Value

  Design period                   20 years (All local roads)
                                  40 years (Cooroy Southern Interchange Connection Road)

  Opening year                    2014 (Black Mountain Range Road, Gardeners Road, Bruce Highway
                                       widening, Uhlmanns Road & Woodswallow Lane, Bruce Highway
                                       side track and Cooroy – Noosa exit ramp side track)
                                  2016 (All other local roads)

  Direction factor                0.50

  Lane distribution factor        1.0

  ESA / heavy vehicle             2.5 (Future Service Road, Existing Bruce Highway)
                                  1.8 (All other local roads)

  N HVAG                          2.8 (Future Service Road, Existing Bruce Highway)
                                  2.5 (All other local roads)

  ESA/HVAG                        0.9 (Future Service Road, Existing Bruce Highway)
                                  0.7 (All other local roads)

  SAR 5 /ESA                      1.1 (Asphalt fatigue)
  SAR 7 /ESA                      1.6 (Subgrade damage)
  SAR 12 /ESA                     12 (Cemented fatigue)

There was no TLD information available for the local roads. Either a rural or urban presumptive load
distribution, as appropriate, was adopted for the various local roads (Austroads, 2010).
The Average Annual Daily Traffic (AADT) and percentage of heavy vehicles adopted in the traffic analysis
for each road are summarised in Table 10.

Table 10        AADT and Percentage Heavy Vehicles (Local Roads)

                                          AADT – 2014                 Percentage Heavy           Heavy Vehicle
  Traffic Section
                                          (veh/day)                   Vehicles (%)               Growth Rate (%)

  Black Mountain Range Road               985                         6.4                        3.0 (2014 – 2029)
                                                                                                 2.0 (2029 – 2054)

  Gardners Road                           525                         5.8                        3.0 (2014 – 2029)
                                                                                                 2.0 (2029 – 2054)

  Future Service Road / Elm               3985                        8                          5 % (2014 – 2017)
  Street (existing Bruce
                                                                                                 2.9 % (2017 – 2029)
  Highway)
                                                                                                 2 % (2029 – 2054)

  Nandroya Road                           1715                        7.4                        3.0 (2014 – 2029)
                                                                                                 2.0 (2029 – 2054)

41/24401/11/437270   Bruce Highway (Cooroy to Curra) Upgrade Section A (Cooroy Southern Interchange - Sankeys Road)    11
                     Job No. 263/10A/12, Invitation No. NCHD-2454
                     Pavement Design Report