@ghotiphaze A state highway truck of course. My state highway department buddies get wound up when they hear that. The truth is the guys I know work hard and it is a dangerous job, if you don't think altering a traffic pattern on a heavily traveled multi-lane interstate highway is dangerous let me assure you it is...

In a work zone there is a specified pattern that must be set up for lane closures involving pre warning crash truck off the roadway with flashing arrow, further along a warning crash truck off the roadway with flashing arrow, followed by a gradual lane closure with cones or barrels then crash truck with arrow blocking the lane, then a distance with a closed lane and more barrels with another crash truck with flashing arrow blocking the lane protecting the work site.

I have a friend who works as a crash truck driver for a contractor, he drives a single axel straight truck with a flatbed filled with about 10" of concrete to add weight, a large arrow board, and a folding "cushion" on the back. When he's sitting in the truck on a job and he see's a speeding tractor trailer breaking the pattern coming up behind him he knows he's going for about a 100' joy ride followed by months of therapy on his back and neck on a lucky day...

A couple of years ago here in Connecticut there was a bridge needing replacement on I-84 which is a very busy road with over 80,000 vehicles per day in that area. The summer weekend traffic was the lightest period, and they engineered the job to be completed in one weekend, with the replacement of the 3 lane bridges on each side to be completed between Friday evening after the rush hour and reopened in time for the Monday morning rush hour...

The eastbound span could be removed in one piece, and the westbound span had to be demolished in place. The new spans could each be brought in and dropped into place in one piece. With much publicity about the highway closing and detours around it even in neighboring states, the road was closed Friday night around 8 with round the clock construction the eastbound side reopened early Sunday evening and the westbound side a few hours later...

Here are a couple of time lapse videos of the project...

[video:www.youtube.com/watch?v=ZuV8v9_FizQ]

[video:https://www.youtube.com/watch?v=SAAMx0W-7S8]

With the recent construction technology developments in precision measuring equipment and CAD programs more and more of these projects are becoming commonplace events...

Supposed to fill one dump truck then play Candy Crush for the 45 minutes it takes for the truck to dump and return. Y'know, like real Muricans.
When I worked for the city I'd occasionally get farmed to the Street Dept. First hour and a half was getting ready for the job. Get to the site, work 20 minutes and pack up for break. After an hour break get ready to return to job site. Another 20 minutes and pack up for lunch.

@Bollox Ref recently read some things about the Netherlands I did not know, like their Delta Works makes California's projects seem kind of pathetic. "That's the system."
https://en.wikipedia.org/wiki/Netherlands#Delta_works

After the 1953 disaster, the Delta Works were constructed, a comprehensive set of civil works throughout the Dutch coast. The project started in 1958 and was largely completed in 1997 with the completion of the Maeslantkering. New projects have been periodically started since to renovate and renew the Delta Works. A main goal of the Delta project was to reduce the risk of flooding in South Holland and Zeeland to once per 10,000 years (compared to 1 per 4000 years for the rest of the country). This was achieved by raising 3,000 kilometres (1,864 mi) of outer sea-dykes and 10,000 kilometres (6,214 mi) of inner, canal, and river dikes, and by closing off the sea estuaries of the Zeeland province. New risk assessments occasionally show problems requiring additional Delta project dyke reinforcements. The Delta project is considered by the American Society of Civil Engineers as one of the seven wonders of the modern world.

It is anticipated that global warming in the 21st century will result in a rise in sea level. The Netherlands is actively preparing for a sea level rise (see Flood control in the Netherlands). A politically neutral Delta Commission has formulated an action plan to cope with a sea level rise of 1.10 metres (3.6 ft) and a simultaneous land height decline of 10 centimetres (3.9 in). The plan encompasses the reinforcement of the existing coastal defenses like dikes and dunes with 1.30 metres (4.3 ft) of additional flood protection. Climate change will not only threaten the Netherlands from the sea side, but could also alter rain fall patterns and river run-off. To protect the country from river flooding, another program is already being executed. The Room for the River plan grants more flow space to rivers, protects the major populated areas and allows for periodic flooding of indefensible lands. The few residents who lived in these so-called "overflow areas" have been moved to higher ground, with some of that ground having been raised above anticipated flood levels.

But we have Elon Musk planning to take some rich people to Mars, so there's that. Before that he wants a Boring company to drill tunnels everywhere for his fancy car traffic, why wait? Don't say geology, or faults, or anything like that. Say drill baby drill. Not smart enough to make the cars fly, but Mars is no problem? ~doink!~ No wonder he is still on the carnival barker's advisory board.

Thanks

Sad!

/s