Another followup on the 24th SW/SW Kenyon sinkhole that got a Waste Management truck stuck for a while back on Monday afternoon: More about the cause, and the repairs, from Seattle Public Utilities spokesperson Rachel Ramey:
SPU located a damaged 15-inch drainage pipe under the street that was clogged with debris and tree roots. Crew members cleaned the downstream pipe to remove debris. Repair crews will be onsite Sunday 7:30 am to 8 pm and Monday 7:30-5 pm for repairs. SPU expects to complete pipe repairs and a temporary patch on the roadway by mid-week, next week. SDOT permanent street repair will follow.
We had already reported Tuesday that a stormwater pipe was to blame, but this adds information about the size and scope of that problem.