More than 90% of paved roads in the U.S. are made of asphalt, which is constructed with nonrenewable materials such as ...

Porous asphalt is designed to allow water to drain through the pavement and into the ground, which can help reduce stormwater runoff, improve water quality, and reduce the risk of flooding.

When roads break down and need repaving, transportation agencies can recycle their old pavement into a reusable material called reclaimed asphalt pavement, or RAP. This method reduces carbon ...