At work this summer, I introduced a very cool new way of viewing underwater bridge piers in zero visibility conditions. Sonar techonolgy has come a long way since 2003 and they can now provide way better detailed images. A sonar survey of two bridges in the province was undertaken and images assisted us greatly in evluating our repair strategy. We wanted to evaluate scour potential/condition and we got some very good quality information from the instrument. Images are 3D

This was posted on the CN corperate facebook page today