Stantec // Oceana Gold NZ Ltd // Waihi North Project Transportation Assessment 5 Table 1: Willows Road Carriageway Section Width and ADT Willows Road Section Existing Width (m) 2008/2009 ADT (veh/d) %HCV1 Significant Structures 0.00 - 0.19 km 5.0 - 5.5 81 6 One Lane Bridge y.1957; Approx. 3.7 m wide 0.19 - 0.31 km 5.8 - 6.5 81 6 0.31 – 0.48 km 5.8 - 6.5 48 10 0.48 – 0.61 km 6.9 - 7.0 48 10 Armco Culvert y.2000 (approx. 2m dia.) 0.61 – 1.19 km 5.7 - 6.2 48 10 1.19 – 1.31 km 2.8 – 3.0 48 10 The alignment is generally straight with good forward visibility. There is one section with a moderate radius s -bend approximately 200 m north of Highlands Road where the forward sightline is restricted by vegetation on the inside of the bend (see Figure 4). The localised seal width at this location is 7.2 m and therefore there is opportunity to add an appropriately positioned centreline to separate opposing traffic movements around this curve. Near the end of the two-lane section, at distance 1.15 km, the carriageway is nominally 5.9 m wide with roadside drains and fences in close proximity on one side and small embankment on the other, as shown in Figure 5. Figure 4: Willows Road Facing south showing vegetation on curve around 0.5 km Figure 5: Willow Road – Facing north to end of twolane section at 1.15 km 2.4 Willows Road / SH25 Intersection Willows Road is accessed from SH25 approximately 2.3 km north of Waihi urban boundary (where the existing speed change from 100 km/h to 70 km/h is located, immediately north of Gladstone Road). The current intersection is a standard T-intersection on the outside of a large radius (estimated at 500 m radius) but relatively short horizontal curve of the highway, with give-way control on Willows Road. To the south of the intersection SH25 has a sealed width of 7.3 m. The width increases slightly at the intersection with 3.7 m traffic lanes, an eastern shoulder of 0.5 m and a western offset form edge line to limit line of 1.9 m. The left turn in curve radius is estimated at 45 m which provides a relatively fast ent ry curve although, even then, there is evidence of vehicles tracking off the edge of seal to enter the side road. The available sight distance from Willows Road has been measured and exceeds 335 m in both directions as measured to both the side road and the highway centreline (see Figure 6 and Figure 7). The kink in the alignment 1 Heavy Commercial Vehicle
RkJQdWJsaXNoZXIy MjE2NDg3