So this project has been several years in the making. The commercial street bridge in Pittsburgh (highway i376) had been deteriorating. So they built a bridge next to hit. Blew the old one up, and are now sliding… yes sliding the new bridge into place….
Very cool!
Tunnel inserted beneath Dutch highway in one weekend - YouTube
Bridge raising in Portland Oregon over 50 years ago.
They did that for a bridge near me a couple years ago, it was considered very novel at the time, at least for this area. In the case of the one here, they had it installed in a weekend, so traffic wasn't even disrupted for the most part.
It wasn't nearly the scale of the one in your video though.
None of this is as impressive as engineering in the UK…
In this great country the powers that be can discuss and plan a new runway for one of the world’s busiest airports for 60 years and never start to build it (Heathrow)
We can design a high speed rail link to save about 25 mins on a 1 hour 45 journey spending billions, stop it short at the London end to save money, move people out of their homes to make way for work, then sell the homes to others at a profit when the line is cancelled
(HS2)
I'd highly recommend the Aussie comedy Utopia. Funny, whilst feeling like it could be a documentary.
That’s how a lot of our river bridges were built. (We have more bridges than any other city in the world. Triple the number in Italy). When going over rivers that’s easier. But still very cool.
They just built a new airport here in Pgh. Added a couple of more runways then knocked down the old airport. Took about 5 years.
That sounds about right. To an outsider it seems as though in the US you just get on with things. In the UK nothing gets done.
Depends on where you live in the US.
TWENTY years ago, in the aftermath of Katrina, the City of New Orleans was supposed to shift from using old screw pumps that ran on a 25 Hz AC supply to modern pumps that run on 50 Hz power - so they can use the national grid. They received about a $1 billion in federal funds to make this transition. Hasn't happened yet. Every time it rains for an hour or more, New Orleans has a major flooding incident.
The adjoining county (Jefferson parish), where we live, got about the same funding post-Katrina. We now have ~200 automated pumps with a capacity of about 20 million gallons per minute to mitigate flooding from tropical storms and hurricanes. In the 20 years since Katrina, Jefferson parish has a few major flooding incident - less than 5.
Totally not true. There has been a section of highway around here that was delayed by nearly five decades due to some butterfly they found in the area. And that isn't all that rare to have something like that happen.
It’s quite easy to stop development…just get people to say they spotted a great crested newt or a bat….
