Another vehicle has become the victim of a large sinkhole in Saskatoon. This time, one opened up near Market Mall on Preston Avenue. The City’s Director of Water and Waste Operations, Brendan Lemke says City officials aren’t able to speak to the details of the sinkhole at this time along with the one that occurred at Avenue D and 23rd Street Friday, since excavation may be necessary to determine specifics.

“Generally speaking, sink holes like these are not common. However, what can happen at this time of year is that depending on the type of break, a water main break can end up melting the thick layer of frost above and create unstable soil conditions or even voids.

With larger diameter pipes and more severe breaks, this can evolve rather quickly. We have no way of knowing whether an accumulation of water on the surface would indicate this type of scenario.

As soon as we are made aware of a potential break, crews are dispatched to the locations and they will complete a preliminary investigation, potentially operate valves to isolate water flows, and prepare for additional investigation and ultimate repair.

While the water remains pooled, it is not possible to inspect visually. Pylons or barricades are placed in the roadway as a warning and best attempts are made to block off areas as circumstances allow.

Any place there is a significant accumulation of surface water, drivers are encouraged to watch for pylons or barricades and avoid driving through any large puddle or marked areas.” said Lemke.