this post was submitted on 29 Nov 2023
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I found such a photo on the Internet and became interested in what function such a structure could perform.

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[–] [email protected] 597 points 11 months ago (6 children)

My guess is that it will be a “nature highway” so migratory species can cross over the road

[–] [email protected] 424 points 11 months ago (6 children)

1000006081

These are great for wildlife as they provide a safe crossing over high-speed highways. They are usually design to be in already existing migration paths where moving a proposed highway may not work and not disrupting migration paths is of importance.

[–] [email protected] 130 points 11 months ago (1 children)

So they're literally building the mountain next year. Neat.

[–] [email protected] 18 points 11 months ago

They dug it out before. Later they rebuild it. But if they wait for a year, nature suffers much.

[–] [email protected] 43 points 11 months ago (5 children)

Looks like a nice choke point for a predator to hang about.

[–] [email protected] 48 points 11 months ago (1 children)

Possibly but I’d think it’s still safer than vehicles and less disruptive to overall migration for a given species.

I wonder if there’s been any studies showing how effective, if at all, these are.

[–] [email protected] 39 points 11 months ago

There have been study's, these crossing are usually design to feel like open fields in a sense, so most animals will cross quick and on high alert to get through the "opening" in the field.

[–] [email protected] 29 points 11 months ago (11 children)

Are there any predators smart enough to strategize like this? I know that some use water holes as hunting grounds, but that's probably more instinctive than actual strategy.

[–] [email protected] 30 points 11 months ago (2 children)

Are there any predators smart enough to strategize like this?

it is the predators that build such passages. Have you ever seen any construction company building them? Even in the first photo that is under construction, there is not any human worker in sight

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[–] [email protected] 8 points 11 months ago (1 children)

Would they need to be that smart? Ambush predators that stay in roughly one area, for example, could naturally grow their numbers in the area around such a chokepoint simply by virtue of the ones in that area having more food available and therefore better survival chances.

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[–] [email protected] 19 points 11 months ago (7 children)

It's taken into consideration of the design of these crossings.

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[–] [email protected] 15 points 11 months ago

-- Mountain Lion Sun Tzu

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[–] [email protected] 104 points 11 months ago (2 children)

Sure looks like an animal crossing.

[–] [email protected] 40 points 11 months ago (4 children)

Why do they put deer crossing signs on the highway? Why can’t they put them on smaller roads instead‽

[–] [email protected] 24 points 11 months ago (6 children)

Also, deer can't read street signs, so they don't know where to cross.

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[–] [email protected] 70 points 11 months ago (3 children)

This is the one! They're ridiculously effective, so much so that my home provinces is sinking like 250 million into building 5 more of them over the next 5 years

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[–] [email protected] 19 points 11 months ago (3 children)

Will there be compacted earth on top of the tunnel so animals can walk?

[–] [email protected] 44 points 11 months ago (1 children)

Yep, they call them land bridges. More of a hill than a mountain, but the meme is right!

[–] [email protected] 17 points 11 months ago

This is cool. This is the first time I have heard about such projects.

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[–] [email protected] 241 points 11 months ago (7 children)

That's an unfinished nature bridge.

[–] [email protected] 94 points 11 months ago (15 children)

Quite a common feature in Europe. Gives the animals safe passage over busy roads.

[–] [email protected] 37 points 11 months ago (10 children)

not just that but it saves human lives as well by reducing animal collisions.

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[–] [email protected] 28 points 11 months ago (4 children)

More or less safe. Predators often camp these choke points for obvious reasons.

[–] [email protected] 10 points 11 months ago (1 children)
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[–] [email protected] 9 points 11 months ago* (last edited 11 months ago) (1 children)

I read pedesterians often camp these choke points. I was picturing hobo joe sitting there to catch a passing rabbit or deer for a good meal.

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[–] [email protected] 99 points 11 months ago (1 children)

They disrupt the nature a little less. Animals aren’t hit crossing the street because they can go over and other small benefits like that. They also look nice and tunnels are fun when your car sounds nice

[–] [email protected] 11 points 11 months ago

Yep, I love a good nature bridge!

[–] [email protected] 87 points 11 months ago* (last edited 11 months ago) (2 children)

It's not finished. It will look like this when they complete it. It's a nature bridge.

[–] NostraDavid 25 points 11 months ago (5 children)

If a duct that transfers water is an Aquaduct, then a duct that transfers nature is an Ecoduct

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[–] [email protected] 13 points 11 months ago

The caption is a joke, but it's basically correct.

[–] [email protected] 66 points 11 months ago (2 children)

We had a few of these built in my country to allow wildlife to cross safely.

[–] silas 16 points 11 months ago

We’ve had a few of these built on my planet too actually

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[–] [email protected] 36 points 11 months ago

This kind of looks like the new one they're building in Banff National park. I drove through over the summer when they started it. They have a bunch of them set up throughout the park.

https://discoverapega.ca/stories/wildlife-crossings-key-to-highway-safety-in-banff/

[–] [email protected] 34 points 11 months ago (2 children)

Coquihalla highway has something like this to keep avalanches and rocks off the road.

It's the only tunnel I've driven that has windows.

Great Bear Snow Shed https://maps.app.goo.gl/HJUSEtGB2Jg8FFTN7

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[–] [email protected] 21 points 11 months ago

// TODO: Support mountain package when it releases

[–] [email protected] 20 points 11 months ago (1 children)
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[–] [email protected] 15 points 11 months ago (1 children)

Could be for a skii-slope as well. There are similar structures in Are, Sweden for example.

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[–] [email protected] 15 points 11 months ago
[–] [email protected] 9 points 11 months ago

I Are they are used to ski over the road, it enables the slope to go all the way to the city cente.

[–] [email protected] 9 points 11 months ago* (last edited 11 months ago) (4 children)

They're probably going to build an overpass on top of it later

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