We have AC main pipe ranging primarily from 4" up to 16" pipe. In a written statement on Wednesday, City of Bellevue Utilities said, "Our experience shows us that the longevity of AC main pipe is dependent on the size of the pipe. And so this would be included in that analysis," said De Boldt during a news conference, Tuesday. Again, we have an ongoing program of replacing approximately five miles of main per year in the city. So, it is definitely in that age grouping that we would be considering replacing it in the future. So, I mentioned that this main was built in the. So, depending upon when it was installed, we would be putting it on our replacement schedule. "Water mains normally last around 100 to 125 years. This means the water main is more than 60 years old, but according to De Boldt, a typical water main should last much longer than that. The map also shows the water main was installed in the 1960s, and officials further clarified the year was 1961. The city’s utility mapping program shows the water main that burst was 8-inches in diameter, made of asbestos cement material. RELATED: Family escape after Bellevue home slides off foundation neighborhood evacuated And I think the city is investigating the roots of that landslide-is it natural? Or was there some other contributing factor to it?" said Mickelson. So, that could have caused the pipe to fail. "We’ve seen a record number of landslides this season due to the rain that we’ve had.
City and state engineers are working to determine whether the recent amount of rain and snow may have put pressure on the water main causing it to burst, or if the pipe itself was the problem. Kate Mickelson, manager of the DNR’s Landslide Hazards Program, said engineers are assessing the hillside. Officials with the Washington State Department of Natural Resources said this is the highest number of landslides they have seen in the state in the past year. Hear the 911 calls after a home slid off its foundation earlier this week in Bellevue, Washington
Frantic 911 calls after home slides off foundation in Bellevue
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