Do it Once Right

The I-40 saga turns expensive, but they might be avoiding what the British like to call 'a false economy.'

"Getting rid of the driver was a little bit of a false economy..."

Taking the trouble to get it right this time might prevent another disaster like the one provoked by Helene's fury.
In some places along the 5-mile-long worksite, the bedrock is exposed. In others, it’s more than 50 feet below the surface.... Reaching the deeper bedrock requires longer steel piles, which has increased the estimated cost and timeline to complete these repairs....

As planned, the reconstruction is extremely robust. The combination of roller-compacted concrete walls, interlocking pipe pile walls and associated elements are designed to withstand forces that were exerted by the Pigeon River during Hurricane Helene. It is intended to make the interstate more resilient to the hydraulic forces associated with future extreme events.... Experts from every discipline of engineering have been involved, working collaboratively instead of one after another like most projects. Each discipline overlaps with others — leadership, hydraulics, geotechnical, geomorphological, environmental, structural — creating an incredible team of engineers. 

Now, my faith in government to get it right is not very great; but at least they're talking about trying to get it right. We'll see. So far it's nearly two years on and you still can't reliably get through the pass, and even when you can there are paralyzing delays during any hour involving significant traffic.

2 comments:

Anonymous said...

One suspects the "worst case" in the plans for the original design didn't know to account for "hurricane - quantity one (1)" levels of floodwaters and debris. The river near where I live was judged in 1940 to not have sufficient flow to warrant dams and protected bridges. The second (!) major flood in 1941 took out everything as far as central Oklahoma, including the flow gauges. There are now dams and armored bridges.

LittleRed1

Grim said...

It is amazing just how much force it has, especially when the steep mountain riverbeds neck it all down.