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Author Topic: US 202 Sinkhole Around King of Prussia  (Read 2235 times)

74/171FAN

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US 202 Sinkhole Around King of Prussia
« on: July 10, 2023, 09:48:54 PM »
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Dough4872

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Re: US 202 Sinkhole Around King of Prussia
« Reply #1 on: July 11, 2023, 08:12:38 AM »
Sinkholes seem to be a fairly common occurrence in the area, this one was just bad luck in that it developed along a major road.
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ixnay

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Re: US 202 Sinkhole Around King of Prussia
« Reply #2 on: July 11, 2023, 08:48:32 AM »
Quote from: Dough4872 on July 11, 2023, 08:12:38 AM
Sinkholes seem to be a fairly common occurrence in the area, this one was just bad luck in that it developed along a major road.

Northbound, it's on the approach to the Bridgeport/Dannehower Bridge split.  Part of the closed stretch is next to what looks like an abandoned quarry, whatever effect the ex-quarry's proximity has on soil stability in the neighborhood.

Apparently the soil condition under the ramp from wb 76 to sb 202/wb 422 was just as bad when a sinkhole formed there some time ago.
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MASTERNC

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Re: US 202 Sinkhole Around King of Prussia
« Reply #3 on: July 11, 2023, 09:23:18 AM »
Quote from: ixnay on July 11, 2023, 08:48:32 AM
Quote from: Dough4872 on July 11, 2023, 08:12:38 AM
Sinkholes seem to be a fairly common occurrence in the area, this one was just bad luck in that it developed along a major road.

Northbound, it's on the approach to the Bridgeport/Dannehower Bridge split.  Part of the closed stretch is next to what looks like an abandoned quarry, whatever effect the ex-quarry's proximity has on soil stability in the neighborhood.

Apparently the soil condition under the ramp from wb 76 to sb 202/wb 422 was just as bad when a sinkhole formed there some time ago.

There is a lot of limestone in the King of Prussia-Norristown area.  They had issues building the Mid-County Interchange on the Turnpike for the same reason.

Think that quarry is something related to the water company IIRC.  Maybe a reservoir?
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ixnay

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Re: US 202 Sinkhole Around King of Prussia
« Reply #4 on: July 12, 2023, 07:50:56 PM »
Quote from: MASTERNC on July 11, 2023, 09:23:18 AM
Quote from: ixnay on July 11, 2023, 08:48:32 AM
Quote from: Dough4872 on July 11, 2023, 08:12:38 AM
Sinkholes seem to be a fairly common occurrence in the area, this one was just bad luck in that it developed along a major road.

Northbound, it's on the approach to the Bridgeport/Dannehower Bridge split.  Part of the closed stretch is next to what looks like an abandoned quarry, whatever effect the ex-quarry's proximity has on soil stability in the neighborhood.

Apparently the soil condition under the ramp from wb 76 to sb 202/wb 422 was just as bad when a sinkhole formed there some time ago.

There is a lot of limestone in the King of Prussia-Norristown area.  They had issues building the Mid-County Interchange on the Turnpike for the same reason.

Think that quarry is something related to the water company IIRC.  Maybe a reservoir?

Settling of roadways and/or bridges at Mid-County maybe?
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74/171FAN

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Re: US 202 Sinkhole Around King of Prussia
« Reply #5 on: July 12, 2023, 08:33:49 PM »
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Road Hog

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Re: US 202 Sinkhole Around King of Prussia
« Reply #6 on: July 12, 2023, 09:07:13 PM »
Putting in a reservoir in a limestone-rich area seems like a recipe for disaster. Hope that was not the case.
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Dough4872

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Re: US 202 Sinkhole Around King of Prussia
« Reply #7 on: July 12, 2023, 10:26:16 PM »
https://6abc.com/king-of-prussia-pa-east-dekalb-pike-closed-sinkhole-henderson-road/13493178/ Here is a story from 6abc about the whole US 202 sinkhole situation
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SectorZ

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Re: US 202 Sinkhole Around King of Prussia
« Reply #8 on: July 13, 2023, 03:50:38 PM »
Better than the other things occasionally simmering under Pennsylvania's roadways.
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74/171FAN

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Re: US 202 Sinkhole Around King of Prussia
« Reply #9 on: July 15, 2023, 10:05:11 PM »
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74/171FAN

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Re: US 202 Sinkhole Around King of Prussia
« Reply #10 on: July 17, 2023, 03:44:33 AM »
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74/171FAN

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Re: US 202 Sinkhole Around King of Prussia
« Reply #11 on: July 18, 2023, 12:07:17 PM »
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74/171FAN

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Re: US 202 Sinkhole Around King of Prussia
« Reply #12 on: July 24, 2023, 02:20:17 PM »
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