List of sinkholes in Ottawa
There have been a number of sinkholes in Ottawa, Canada.[1] The phenomenon is relatively common in eastern Ontario where Ottawa is located.[citation needed] The province has a large amount of karst bedrock which seeping groundwater can dissolve forming underground caverns. Other areas of Ontario which have experienced significant sinkholes are Toronto where in August 2005 a sinkhole seven meters deep opened up on a heavily used expanse of road which remained closed until April of the following year and Windsor where a sinkhole 60 meters across and up 7.5 meters deep formed in February 1954 causing severe disruption to nearby buildings and roads.[2][3][4]
2012 sinkhole[edit]
A sinkhole occurred on Regional Road 174 at the Jeanne D'Arc interchange on September 4, 2012 at around 17:00, closing the eastbound lanes. Traffic was rerouted via the Montreal Road interchange and St. Joseph Boulevard for traffic to Orleans, Cumberland, and Clarence-Rockland.[5]
2013 sinkhole[edit]
During a busy morning commute in the autumn of 2013 a sinkhole opened up on St. Joseph Blvd in the Orleans suburb of Ottawa . It was caused by a burst underground 40-year-old concrete pressure pipe. The road cracked and collapsed after water started percolating.[6]
2014 sinkhole[edit]
On February 21, 2014, an 8 m wide and 12 m deep sinkhole at the LRT tunnelling site for the O-Train led to road collapse at Waller Street, just south of Laurier Avenue. No one was injured, and the cause of the sinkhole was unknown, but the CBC reported that the deputy city manager, Nancy Schepers said, "Monitoring equipment has confirmed that the impact is localized, and the geotechnical team has not identified any safety concerns at this point."[7] The sinkhole interrupted electricity, water, sanitary and storm services to nearby business and traffic lights. Traffic and buses were rerouted and work on the LRT was halted.
2016 sinkhole[edit]
Rideau Street was closed to all traffic from June 8 to July 2, 2016 after it collapsed in the vicinity of excavations being made for the Rideau station of the Confederation Line. The sinkhole spanned all four lanes of the road.[8][9] On October 2 a small sinkhole opened in the same place.[10]
References[edit]
- ↑ Scholey, Lucy (8 June 08 2016). "That sinking feeling: other times Ottawa-area roads have collapsed". Canada Metro News
- ↑ Ontario Ministry of Community Safety and Correctional Services. (2012). "Hazard Identification and Risk Assessment for the Province of Ontario".
- ↑ Russel, D. J. (1993). "Role of the Sylvania Formation in sinkhole development, Essex County", p. xi. Ontario Geological Survey, Open File Report 5861
- ↑ Buck, Genna (9 June 2016). "What went down in Ottawa? The science of sinkholes explained". Canada Metro News
- ↑ City of Ottawa (10 September 2012). Information Update (copy archived from original on 11 September 2012)
- ↑ McCooey, Paula (8 June 2016). "I sink, therefore I jam: A brief history of Ottawa sinkholes". Ottawa Citizen
- ↑ "Road collapse leaves 8-metre wide sinkhole at tunnelling site". CBC. February 21, 2014.
- ↑ The Guardian (8 June 2016). "Sinkhole spanning four-lane road swallows van in Ottawa".
- ↑ "Infrastructure failure at Rideau and Sussex". City of Ottawa. 30 June 2016. Retrieved 5 July 2016.
- ↑ Lofaro, Joe (3 October 2016). "City reopens section of Rideau Street after a small sinkhole opened up". Ottawa Citizen
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