AASHTO #3 Stone

The American Association of State Highway and Transportation Officials (AASHTO) classifies these bulky stones as AASHTO #3. It is a versatile aggregate that can be used in multiple applications.


What Is #3 Crushed Stone?

This material is a clean stone and easy to handle. AASHTO #3 is known for its high durability and can withstand wear and tear in high-traffic areas. The AASHTO #3 gradation is ideal for drainage and as a filler material. The angular shape created by the crushers allows the crushed stone to lock together when compacted, giving it high levels of stability.


AASHTO #3 Stone Size

AASHTO #3 stone size is relatively large at about 2 inches in diameter with a 3 inch topsize. Larger stones are usually designed to balance strength and drainage capabilities.


Uses for AASHTO #3 Aggregate

The three main areas that AASHTO #3 aggregate uses are drainage, foundations and landscaping with erosion control. The stone’s size and gradation make it ideal for French drains, septic drain fields and as a base layer for drainage. It is also used as a foundation later to give robust support and manage water runoff. Because of this stone’s larger size, landscape designers also like to use #3 aggregate for decorative purposes and erosion control.

You often find that AASHTO #3 aggregate is layered with other sizes of crushed stone to achieve the desired compaction and drainage needed. When used as a foundation, AASHTO #3 is often a filler, as it helps prevent shifting or settling. Here are some other possible applications:

  • A base for a driveway with screening
  • French drains
  • Septic field beds
  • Retaining walls
  • Lining for a stormwater diversion pit
  • Tire scrubbers
  • Haul surfaces
  • A road base


Find the Right Crushed Stone at York Building Products

We have a wide range of crushed stones at York Building Products, from AASHTO #1 for road bases and construction to Rip-Rap stone. We also have high-quality products available in limestone, sand, clay mixes and imbricated stone.

Our stone is quarried from the east side of North America, including Pennsylvania and Maryland. We’re a family-owned business, operating since 1939, giving us insight into the local area so we can produce the best possible products. We have an extensive range and can supply a variety of stone materials for your construction or landscape project.


Contact Us to Begin Your Next Construction or Landscaping Project

With over 80 years in the business, we understand the different needs of the construction and landscaping sectors. Our masonry, cement and hardscape products have been refined and innovated over the years to make them the perfect solution for your project. We also vertically integrate our sand, gravel and stone divisions to optimize product quality from the beginning of their life cycle as a raw material through to the end product.

Contact us today to learn how we can benefit you and your projects — we’ll help you select the right stones for your needs and budget.