Looks like Boeing is in the [] on this one. Still digging. We also have Datacenters in that area. Very industrial area of Seattle. No good reason given for 24 (5 year old) power poles to all of a sudden go down. None Experts are saying that they haven't seen anything like this after 30 years on the job. Here is a map of the area:

16th avenue south to S Norfolk Street

Mile long stretch on E Marginal way south.

https://www.openstreetmap.org/search?query=s%20norfolk%20st%20seattle%20wa#map=15/47.5147/-122.2904

East Marginal Way re-opens after 24 power poles crash in south Seattle

https://www.king5.com/article/news/local/east-marginal-way-re-opens-after-24-power-poles-crash-in-south-seattle/281-994dee2a-2e5f-4a4a-a4b5-655f2dfb88da

Any other ideas out there?