We need to to switch to concrete in this country for most projects.
Concrete highways save you gas compared to asphalt ones.
Prove it.
https://www.sapphiregassolutions.com/blog/asphalt-production/asphalt-vs-concrete-roads-which-is-better/
Lower emissions due to lower fuel costs for repairs
I think I see what is going on here.
It saves fuel on the construction end, but there is no fuel difference for vehicles driving on the completed roadway. That explanation does at least make sense.
However, I don't know that the savings are enough to outweigh other costs, and a more holistic picture would consider the energy use of concrete vs asphalt lifetime.
Yeah, he mis-understood that "positive". It's in reference to construction emissions and costs.
Actually, if you read the last line of the website, the company is actually promoting asphalt, not concrete.
At least in high-traffic urban areas. I-85 north of Henderson seems kind of random to me at least. There's little traffic in that area so it seems odd that they used concrete for that.
Traffic volumes usually have nothing to do with choosing asphalt vs. concrete, especially for long term traffic volumes. There's certainly benefits of using concrete on a heavily travelled roadway, but it's fairly clear country-wide highways with heavier volumes don't generally use concrete.
If anything, if a transportation department is looking at a way to get a project done quicker because they want to limit delays, they will generally use asphalt over concrete.
