Rubberized Asphalt

rubber crumbling machine
See how tens of thousands of worn out tires become a special kind of asphalt used on many ADOT paving projects.
Crew laying pavement
Did you know that weather affects the timing of paving work? ADOT needs Mother Nature to cooperate when paving our highways.
Asphalt sample
When someone hears the word “asphalt,” they might picture the road that they drive on, but asphalt is actually one component of that surface.
Old used tires
For over 25 years, ADOT has been using rubberized asphalt on the Arizona highway system. Take a look at how it's made.
Rubberized Asphalt was first used in Arizona in 1989
Rubberized asphalt is durable, smooth and uses recycled materials that otherwise would be headed to a landfill ... what’s not to like?
ADOT crew places rubberized asphalt on roadway
We asked and you answered! Back in December when we told you about the Quiet Pavement Pilot Program, we launched a survey asking for your thoughts on freeway surface conditions in Maricopa County.
Back in the early 2000s ADOT started to hear from drivers who said certain stretches of Valley freeways seemed quieter than others. ADOT and the Maricopa Association of Governments (MAG) noticed a difference, too. It seemed that areas paved with an asphalt rubber friction course (rubberized asphalt), which MAG funded through the Regional Transportation Plan, were less noisy than freeway surfaces with cement concrete pavement.
Millings from the old, worn roadway are used to build up the road's shoulder. along US 60
We write a lot about building new roads on this blog, but equally important is the maintenance of the state’s existing highways – that’s part of ADOT’s job, too!
Bridge in Northern Arizona
Much has changed since ADOT got its start in 1927. Back then, the agency was known as the Arizona State Highway Department and roads certainly were built a little differently. Methods, materials and technology have changed so much since then.

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