RockAsphalt© believes you shouldn’t compromise on the quality of the ground you walk on. Since 1895, we’ve continuously engineered our natural asphalt to be a permanent, clean, and safe solution for all your road maintenance needs from pothole repair to new road construction. Successfully paving the road ahead starts with changing the road you’re on.
Some people claim that the story of RockAsphalt© begins in 1885 when the Lathe Carbon Company first mined bitumen outside of Uvalde, Texas. Others argue it wasn’t until the early 1890’s when the city of San Antonio used bituminous Anacacho limestone to pave downtown Crockett Street. Still others say the story only really starts in 1928, when cold-mix-cold-laid asphalt began to be shipped to New York City, Philadelphia, and other northeastern states to compete against natural bitumen materials imported from Trinidad.
But we like to think the history of natural rock asphalt actually begins much earlier — 70 million years ago in fact, if you ask most geologists.
It was then during the late Cretaceous period when diagenetic processes first began to transform carbon sediments into the rock we now call Anacacho limestone. Later when pressure from surrounding rock formations caused migrating hydrocarbons to permeate that porous limestone, the result was a unique bitumen impregnated rock, or what geologists today refer to as “native asphalt” or “natural asphalt.”
Granted, when most people think asphalt, it’s not natural but manufactured asphalt that comes to mind. Why? Well, as demand for paved roads increased sharply after World War II, more and more asphalt material had to be artificially manufactured from distilled crude oil and rock aggregate to keep up.
The deposit we mine in the southwest corner of Uvalde County is one of the largest natural asphalt formations in the world, and the bitumen-imbued limestone creates a unique asphalt repair that can’t be replicated.
That’s why countless cities and states rely on all-natural RockAsphalt©. Since 1895, hundreds of millions of tons of natural rock asphalt have been shipped to municipalities and industrial clients all across the United States. But the biggest and most loyal customer over the last hundred years?
There’s a reason state DOT’s and municipalities have trusted our material to pave highways, runways, and other critical infrastructure for over a century. If you’re looking for a durable, high-performance asphalt, we promise you won’t find anything better anywhere. And our family’s been mining and producing natural asphalt for over five generations, so we take that promise seriously. Providing our clients with one-of-a-kind RockAsphalt© is a family tradition around here — and one we’re proud to uphold.
We take pride in our work. To grow as individuals and an organization, we hold each other responsible for what we do and say.
We put others first. Prioritizing the needs of others over our own demonstrates our respect and care for the people around us.
We strive to be honest and fair in everything we do, not just when it's easy. When doing the right thing is difficult, character matters.
Everything we do, we believe in doing well. A commitment to personal and professional excellence informs every part of our work culture.
We at RockAsphalt© know how much the world depends on well-functioning roads and runways. That’s why we’ve made it our mission to provide municipalities and contractors with a quality pavement repair they know they can trust. By serving the men and women who maintain our infrastructure, we do what little we can to help keep the world productive, secure, and connected.
Connect with RockAsphalt© to manage your road repairs in a more cost-efficient way.
Our natural asphalt is solid and so are our people. Find out what positions are available.
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