Tag: Asphalt

How Do You Know What Roads are Good Candidates for Mill and Overlay?

By Mark Petersen, PE Structural layer coefficient. Excavation below subgrade. K values. Cold in-place recycling. If those terms aren’t familiar to you, not to worry. Transportation engineers are well-versed in the vocabulary of road repairs, and you can rest assured that what’s happening on the other side of those orange barrels is for the benefit… Read More »

Highways Designed with Snow and Cold in Mind

By Eric Sorensen, PE Winter starts grating on the nerves of many about this time of year, especially when snow and ice slow our travels. The good news is that my fellow highway and bridge engineers and I know all about challenging northern and mountain environments, and we’re always accounting for winter driving factors in… Read More »

Asphalt vs. Concrete: Not a Black and White Choice

The most basic way state and local transportation departments can decide whether to pave a road with concrete or to go with asphalt is pretty simple: Asphalt costs less initially, but concrete lasts longer. The overall trend of rising oil prices since 2000 has raised the price of asphalt and reduced its price advantage over… Read More »