DECISION
19 It is my opinion that the primary judge's finding that the respondent's fall was caused by the 50 millimetre drop from the road surface to the manhole cover was clearly open and cannot be upset on appeal. In my opinion, the respondent's description of the occurrence, coupled with her denial in cross-examination that she had "just stepped awkwardly", and coupled also with the physical state of the road as proved in evidence, amply supports a finding of fact that the respondent's fall was caused by the abrupt change in level. In the circumstances of this case, the respondent's evidence of falling after treading on the side of the manhole supports the inference that the respondent's foot was partially unsupported and to some extent gave way, causing the fall. The circumstance that the allegation in the Statement of Claim was of tripping does not in my opinion detract significantly from this inference, in the light of the primary judge's assessment of the plaintiff's credibility as a witness.
20 There is more substance in the other ground.
21 In my opinion, any liability in the appellant must depend upon what it did or failed to do at around the time of re-surfacing the road in the early 1990s. I do not think it can be suggested, having regard to the descriptions given of the manhole and the photographs, that there had been any subsidence since that work was done; and even if it were the case that the appellant should have had some inspection program, such a program could not have disclosed to the appellant any more than would have been apparent at the time of the works.
22 I accept the appellant's submission that there is no basis for any finding that the appellant should have substantially changed its design for the level and the gradient of the road to conform to another authority's manhole. I also accept that the evidence does not show that the re-surfacing work increased the danger of the transition from the road surface to the manhole cover. However, the appellant did the re-surfacing work, and left it in the condition described in evidence; and if it is the case that that condition constituted an unreasonable hazard, in respect of which the appellant could and should have taken some action, then the primary judge's finding can be upheld.
23 In my opinion, the evidence about the other manhole does give support to the respondent's contention that the appellant could have provided for a more gradual and therefore safer transition from the level of the road surface to that of the manhole. In my opinion, the inference is open from the evidence about similarity of the two manholes that they were installed by the same authority in approximately the same position on the road and at approximately the same level, and that the significant difference between them was that the transition from the level of the road surface to the level of the manhole was made much more gradual in the case of the other manhole. That is enough, in my opinion, to meet Mr. Garling's submission that it was not open to the primary judge to find that the appellant could have done it differently, in the absence of evidence as to what was possible and reasonable having regard to available methods of construction.
24 Furthermore, it would have been possible for the appellant to have requested the authority responsible for the manhole to re-locate its level so as to conform to the road surface, such request having some statutory authority under ss.98 and 99 of the Roads Act 1993 and the pre-cursors of those sections. In the absence of evidence from the appellant that it made such a request, it could be inferred that it did not do so.
25 The question then is, should the appellant, as a matter of the exercise of reasonable skill, care and use of resources to keep the risk of injury to the public to reasonable levels, have done one or other or both of these things?
26 The answer to that question depends partly on the degree of risk involved, and the nature of the measures required to alleviate it. In Ghantous, the High Court stressed that our environment cannot be risk-free, and that pedestrians cannot expect to have provided for them perfectly level and unblemished surfaces to walk on. It is a matter on which minds could reasonably differ whether the change in level in this case was or was not the kind of irregularity that pedestrians should expect and watch out for.
27 I am inclined to think that sudden variations in level of this magnitude may generally be expected at the edge of footpaths, at transitions between different paths or surfaces, and even between footpath slabs in the vicinity of trees; and also between paved and unpaved areas of road. However, the same may not be true within the paved surface of an apparently well-maintained road, particularly where the change of level is not obvious; and the circumstance that the change in level in this case was in a designated parking area, where it could be partially obscured by a parked car, would add to the risk. While the matter is not free from doubt, I am not satisfied that the primary judge was wrong to hold that the change in level was an unreasonable hazard in this case.
28 The next matter concerns what the appellant could, and perhaps should, have done about it. As mentioned earlier, in my opinion the evidence about the other manhole justifies a conclusion that the appellant could have made the change in level more gradual, so as to make the transition less hazardous. It could also have advised the authority responsible for the manhole; and although that would not necessarily have resulted in that authority giving the situation in this case priority, in my opinion it is reasonable to conclude that something would have been done during the three or more years between the re-surfacing work and the time of the accident. Neither of the measures to which I have referred would appear to be onerous, and the appellant chose to lead no evidence to suggest that they would be.
29 In my opinion, the respondent did lead enough evidence to cast an evidentiary onus on the appellant, if the appellant wished to say that the measures required to deal with this hazard were such that it was not a breach of its duty not to have taken such measures.
30 For these reasons, I am not satisfied that the primary judge was wrong in deciding that the appellant was negligent and liable for causing the respondent's injury. Accordingly, in my opinion, the appeal should be dismissed with costs.
31 ROLFE AJA: I agree with Hodgson JA.