"Over the next few months we'll probably see recurring sinkholes in the downtown and Beltline area," said Bruce Burrell, director of the Calgary Emergency Management Agency.
© Jeff McIntosh/ The Canadian PressA road crew foreman surveys the washed-out lanes of northbound Macleod Trail on Monday.
On Tuesday, crews repaired a large sinkhole on the 5th Avenue flyover that was caused by groundwater.
Eroding pathways and roads near the river are posing another potentially deadly hazard for those who may venture too close, Mayor Naheed Nenshi warned.
"We'll fix them when we find them, given the ground conditions there will be more," he said.
Comment: This excuse that all underground pipes in the U.S. suddenly became too old is growing a little 'old' itself. In fact an incredible number of sink-holes have been appearing world-wide. Take a look at these: Sinkholes - A Sign of the Times?