Duffs Bridge and Marlee Bridge Replacements 

Yes it was dear

Agree. Commentary adds perspective, details, and context that photos/videos can't do alone. It's a mistake that many YT videographers make, all video, no sound.

Yes

Watch here more

Yes dear

Cheers bro

No oroblem dear

They would moan if it was only 10mins , it's human nature to complain about anything , even if it's for betterment of human travels

I wish my area could do that in 10 days. Took my area 8 years to replace a 3 yard bridge and a new traffic light with a dedicated right turn

Probably not billions as you said, but certainly could be quite expensive - how long are the spans on the Champlain bridge compared to this one? Replacing a span on Champlain would probably cost at least what these two bridges cost combined, but I'm just taking a wild guess.

​@@MikeT-TheRetiredColonel ​ The Champlain bridge is a 3440 meter bridge. It's a major bridge, one of the most used in the whole of Canada. Even at such a massive cost, the economic damages of a bridge closure far outweigh any building costs. There's several hundred of millions dollars of freight being transported on it each year. It met an early demise because it's design meant that the deck and girders were one single unit which made it impossible to replace, or properly repair parts that failed. Several hundred millions were spent to extend it's life just a few more years until it's replacement was ready. After just a few decades, they started to notice that there was premature wear and tear. They ended up using external reinforcements to strengthen the girders supporting the road deck. That caused additional stress in the pillar heads and they also had to reinforce those. Being such an important bridge, closure would only be considered as a last resort. Plans were put in place for a worse case senario, including the purchase of a massive steel girder that they refered to as "Super Poutre" beam that could quickly be installed on top of the road deck if necessary. The bridge was wired with several hundred sensors and was monitored 24/7. In addition, regular inspections were carried out. During one of those inspections, they found a hole in one of the concrete girders that was more then a meter. Just about all of the pre-stressed cables in that girder had failed and for all intents and purposes, it's load was now being carried by the remaining girders. Super poutre was installed and stayed there for months to keep traffic moving while emergency repairs were carried out. The crazy thing is that while all of that was going on, government were still busy playing political games, delaying the replacement of what was now quite obviously a dangerous bridge. We had a highway viaduct collapse in the previous decade and the memories were still quite fresh. I think that Super poutre and the media attention that got is what finally did it and made the situation politically untenable. Once they finally start construction, it went up quick. Building a bridge on that scale is usually a process of a decade. They started in 2015 and finished it in 2019. Building started before the design was finalized. The new bridge is massive by any kind of scale, has a steel superstructure that can be repaired easily, or even partially replaced as needed. The rebar in the concrete is all stainless steel which should extend it's lifetime by quite a bit. The concrete itself is a special high strength mix. They really spared no expense after the mess that was the last bridge. I think that politicians have learned their lessons. There's a massive infrastructure renewal going on and there's really no opposition to spending the necessary money to make it happen.

@@jonathanlanglois2742 Tks. Great to hear. Love Montreal. from Newfoundland. Good work. good post.

@@jonathanlanglois2742 don't you all salt your roads to de- ice? Which is not good for concrete structures

@@matthewnewmann8555 All of the major roads are indeed salted. In fact, it used to be that the vast majority of roads would get salted. Nowadays, sand and gravel is often employed on more residential streets.

mans got to eat lol

Guess what happened with them tiny cow's patiently grazing in the background 🥩🍻

Shit that's anywhere lol

Watch more here

Or pretty much anywhere else in the US lol

Indeed, saw the car going up and down at the end. Or at 18:20.

That’s how all bridges are like on highways in America, they just can not make a flush approach from either end.

Australia - that big map of the country @0:12 is a dead giveaway

@@MikeT-TheRetiredColonel Lol. Exactly. Not to mention the accent. Wha a silly comment.

@@MikeT-TheRetiredColonel like the questionable habit of driving in wrong side of the road... 🤔

With one car per week pedestrians should be safe

And twice as quick..

5 minutes into the video, THREE METERS MATE.....

The crane wasn't assemble a its maximum lift capacity at the beginning.

350 ton

The crane will lift 500 ton like right next to it, not 50 meters away on the other side of the river. So, get an even bigger crane in there (not possible without major earth works), get the crane midriver (not possible due to flood issues/ needs major earth works) or decide to split the load in two, and save some money in not having to go full monty on the crane, dufficing with the 350 ton package. Besides "hat little bit of wood" are you kidding me, wood is heavy!! Especially the dense hardwood species needed to construct a bridge that lasted 100 years (give or take, didn't pay too much attention to the years mentioned).

Mate, you are in Australia.....there are no pedestrians

Australians swim across river crossing, it keeps their beers cool.

there aren't any

@EpiDemic117 They had room at the side, so I guess they could be added at a later date.

if you think that rotten junk was usable for panelling you're crazy, they obviously re-used what they could (15:40)

Australia, north of Sydney (map @0:12)

Вася, ты забыл написать номер счета, куда перечислять. Налом не получается.

Is that gibberish even a language 🤔🙈

Wow, several million from each bridge? You do realize that it cost $16 mil combined, right? And this is way out in the outback where the bridge closures had little effect on traffic. I'm guessing you were an engineer on the project, right? Oh, wait, you're a keyboard engineer - 'nuff said

@@MikeT-TheRetiredColonel Uh, i saw $6 milion in the end for cost, not 16 or is that ausd vs usd?

@MidnightVisions you watched the video? they intended to build a new approach and all, but some wildlife species blocked that new route. And since they didn't want to throw away another design (and dollars) when more wildlife was found, they chose this option. (first advantage) Also mentioned at least twice, reusing the trajectory means little to no work needed on the approaches to the new bridge, compared to the long reroutes needed for the bridge in the river curve. So that saves money (second advantage allready), Not related to the actual bridge location, but testimony to how considerate they were to saving moeny or spending it wisely: Initial goal was to build for $5 mil, tenders where put out at $12. They where thanked for there input and ignored. The contractor asked to do the job was smart and designed one bridge to fit both locations, and delivered both bridges for $6 (or $6,8) mil dollars on and partly ahead of schedule. The old wood was reclaimed. (which will have granted some money back) And finally the temporary steel carrier structure built under the old bridgedeck and reused under the second, was designed to be usefull in case the county needed to replace a washed away bridge in case of emergency. So money spent but not on steel to be scrapped immidiately after the project. On such a big project to say there would have been a saving of "several milion" on a total of just 6 milion is plain stupid. (Even if i am mistaken and it cost the 16 milion MIke the colonel talks about, several milion are impossible to shave of the project)

Trump’s followers?

Proper response is: thank you very much for informative video. In reality everyone who publishes a YT video is blowing their own trumpet or calling attention to themselves in some way.,

@@cdouglas1942 if you say so automaton

100 year old bridge that would burn in an instant considering how things are down under - you have to think ahead for the next 100 years

Sadly timber bridges are too costly to maintain and thier design life wouldn't be as long

I didn't even notice the music before I read your comment. Had to play it again to understand...

@@alandud50 Would you say that you were interested in or able to retain any of the technical information ... or were you simply 'entertained' ? 🤔

Asked you mother to turn of the sound?

To my regret, this beautifull old bridge showed just in this video alone, lots of signs of needing not repairs but restauration. Which is in the modern moneydriven times just not feasable for a county to choose between steel and concrete vs wood. If some sponsor who loved the look would have told county to want to pay for the restauration (and upgrade to cope with modern trafic weights) they might have choosen to accept that. MIght because maintenance costs would still way heavy on their budgets. The artifact mentioned was weighing on the decision where to put the new concrete bridge. Not on whether or not to demolish the historical work. Since it was in the floodplain, the old bridge just had to go, once decision to build a new one was made.

Bert Bergers Understood. However, I am certain there are non-artisan engineers, laborers, apprentices that would have dreamed of the opportunity to contribute to the restoration. It is a shame, a crime really, how quickly we allow the destruction of our past. Thank you for sharing a piece of history that we will never see again.