← Back to context

Comment by OtherShrezzing

8 months ago

This is a great initiative which I fully support. But why does it take 4-6 years (including several months of complete road closure) to build what is, in the grand scheme of things, a quite small bridge?

Believe it or not, the people that design and build these bridges have a lot more experience than you do. So if they're doing something that doesn't make sense to you, you should ask yourself what you're missing, and not question their basic competence.

The point isn't just to make a bridge, or they would use a simple concrete bridge.

The point is to make a bridge that is preferable to crossing the highway. And to do that they need to landscape it as if it were part of the landscape. That takes more time because the bridge needs to be stronger to handle the weight of the soil and plants, which means the design, permitting, and construction phases are longer.

They're closing the surrounding road for the soil movement part of the project because that part of the project entails risks of landslides, and it's safer to just close the road. However, the road won't be closed the entire time; it will only be closed for a few hours at a time. The months-long period is just the part of the project when the road will be subject to potential closure.

Because they aren’t building a cheap old bridge animals will probably learn to use. They are effectively regrading the mountainside and landscaping over this bridge to try and blend it in with the landscape. Imo its a waste of money. Crabs learn to use the dead simple ugly bridges. Crabs. A coyote or a mountain lion or deer (what you’d see using this thing in CA) all already use human style bridges to cross highways.

  • Not sure that it's a complete waste of money, but it's pretty obvious that animals will use any means of getting across that's convenient.

Completely agreed. All the nonsense about getting just exactly the right soil composition, letting the soil "age", and what-not, seems bizarre and silly. If an animal needs to use the bridge, it'll learn to use the bridge. Spending so much extra money and time to get the vegetation just right is a waste of taxpayer dollars.

This is lightning speed for California construction...

  • They can go hyperspeed if they want. See freeway building after northridge earthquake or when they replaced an entire bridge over the 405 in one night.