Monday, June 15, 2026

Sinkhole closes I-44 and part of I-70 in St. Louis, MO

(Satellite)

If that hole had opened a little to the West, cars on Broadway might have fallen into it. If it opened up a little to the South, the pylon for I-44 would have been exposed.
reddit
Avoid I-44 in Downtown St. Louis. A huge sinkhole has opened up under the interstate bridge. This section will be closed until further notice.

KMOV posted
The St. Louis Metropolitan Police Department shares a map showing the routes that will be closed due to the sinkhole that formed on Broadway and Biddle.

If they had so much water leaking that it eroded a hole that big, why didn't the water department notice that the flow was way too high and dispatch someone with ground penetrating radar to find the hole while it was much smaller?
FirlstAlert4
"Multiple water main breaks caused a sinkhole to form near Highway I-70.(KMOV)"
"This caused a sewer washout, leading to the collapse of a 12″ and a 10″ main into the excavation site."
"Crews are working to address what is likely a failing valve. The water division said there is no timeline for when this will be repaired." [The tank that almost exploded in California because of a bad valve and this incident tells me that valves should be periodically tested.]
Water main breaks have become more frequent as the water district has accumulated $700m of deferred maintenance needs.

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The hole is getting close to the pylon on the other side of the interstate.
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