Final-Technical-Assessment-K-Freshwater-Ecology-v2.pdf [pdf, 2.6 MB]
...work. (e) It would have been ideal if the Waikawa Stream bridge was extended northward to avoid the need for culverting Stream 27.1, however, this would have effectively doubled the span of the bridge, approximately doubling the $13 million base cost estimate of this bridge. Given avoidance of a stream crossing here was not possible, a culvert solution for Stream 27.1 was selected. This uses best practice mitigation in the form of the stream simulation design, hence is an accepta...