Welp 36 is down and out

Eh. Any Jeep or Subaru should easily handle a road like that. No real need to close it.

https://uploads.tapatalk-cdn.com/201...6ceab84972.jpg

It continues to get worse. They haven't even begun to repair it.

Who pays? Drivers/Taxpayers will continue to pay. I doubt the contractor will be held accountable.

what a mess. The commuters that use that daily will also be in a mess of traffic when they all detour the same way. That is going to take some time to fix, even with crews working 24/7.

The roadway continues to slide. The retaining wall that is supposed to contain the soil under the roadway is bowing dangerously and some of the concrete slabs have fallen off. Won't surprise me if that retaining wall blows out.

How long before the westbound side starts to fail?

They're reporting that it's OK and hasn't moved. If the retaining wall does fail in a significant way, who knows if that will be a problem as it becomes unsupported?

I would also be concerned about the location where the retaining wall is blowing out as it's also a support structure for the overpass over the railroad tracks.

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Originally Posted by Eric P

I'm sure it was undercompacted soil built hastily. This was built at a time CDOT was making a change to address this issue. It may have been built with the older requirement. I am sure the soils engineers in my office have been busy all weekend.

At 1sr when I heard cracked concrete, I thought the heat and moisture caused the concrete to thermally expand and buckle.

Similar but smaller soil failure have occurred at I25 & I225 tunnel and on I25 between Colorado and University. COSMIX in Colorado Springs is another example of failed soil.

All these projects were build under Design-Build contracts in haste. CDOT has little control and say in QA. QA failures can still be accepted through "value engineering" buy the designer, who is also the builder. Ultimate Jerry rigging boondoggle. Cant wait to see what C470 and I70 bring after completion.

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A little history on that area:
In 1985 two trains collided at a railroad underpass right near there and caught fire, destroying the bridge. The bridge had to be rebuilt and was done so very hastily.
https://www.9news.com/article/news/l...pass/427366033

When US36 was widened in the mid 90's I believe quite a bit of fill was brought in from the dredging of Hidden Lake and Sloans lake, I know for a fact this soil was used on I-76 which explains why it is a roller coaster ride from Federal east.
Quality fill material.
Groundwater in the area of the recent failure is also present.

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Originally Posted by Irving

Going across the city sucks no matter what. I would rather drive to Fort Collins for work than the Tech Center, and it's twice the distance!

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I commute from centennial to Broomfield, not today though.

It was reported it is falling 1" per hour.

I heard this morning that the fact that it's still moving is delaying any action on remediation. It would almost be better if it just collapsed, because they could then safely fix it. As it is, getting close to the bowing retaining wall is too dangerous.