Martin Marietta is one of the largest suppliers of aggregates and concrete in North America

Martin Marietta Materials is a publicly traded company that extracts and sells aggregates — the sand, gravel, and crushed stone that go into concrete, asphalt, and construction projects. They operate quarries and distribution facilities across the United States and sell both raw materials and ready-mix concrete to contractors, builders, and government agencies. If you are sourcing concrete or the materials that make it, you may encounter Martin Marietta as a supplier or competitor in your region.

The company does not sell directly to homeowners for small projects. They work with concrete contractors, construction firms, and ready-mix plants that then deliver to job sites. Understanding what Martin Marietta does and how their supply chain works can help you understand pricing, availability, and lead times when you are planning a concrete project.

Key Takeaways

  • Martin Marietta extracts aggregates from quarries and sells them to ready-mix concrete plants and construction companies, not to individual homeowners.
  • The company operates in most U.S. states and supplies both raw materials (sand, gravel, stone) and finished ready-mix concrete.
  • Concrete contractors and ready-mix suppliers source from Martin Marietta, so the company's availability and pricing affect what you pay for concrete delivery.
  • Lead times and pricing depend on your location and the current demand in your region, since aggregates are heavy and expensive to transport long distances.

What Martin Marietta actually produces and sells

Martin Marietta operates two main business lines. The first is aggregates — they own and operate quarries where they extract sand, gravel, crushed limestone, and other stone materials. These materials are the backbone of concrete; a typical concrete mix is about 60 to 80 percent aggregate by weight. Martin Marietta sells these raw materials in bulk to ready-mix concrete plants, asphalt producers, and construction companies that use them for road base, fill, and other applications.

The second line is ready-mix concrete. Martin Marietta owns ready-mix plants in many regions where they blend cement, water, and their own aggregates into concrete that is delivered by truck to job sites. A ready-mix plant is a facility with large mixers and a fleet of concrete trucks; the company operates hundreds of these plants across North America. When a contractor orders a truckload of concrete, it often comes from a Martin Marietta plant or a plant supplied by Martin Marietta aggregates.

The company also produces specialty products like recycled asphalt, engineered fill, and landscape materials, but aggregates and ready-mix concrete are their core business.

How Martin Marietta's supply chain affects concrete pricing and availability

Because Martin Marietta controls both the quarries and many of the ready-mix plants, they influence concrete costs and delivery times in the regions where they operate. When you call a local ready-mix supplier for a quote, that supplier may be a Martin Marietta company, or they may buy aggregates from Martin Marietta. Either way, Martin Marietta's production capacity and pricing flow through to what you pay.

Aggregates are heavy and expensive to transport, so they are almost always sourced locally. If Martin Marietta is the dominant aggregate supplier in your area, their production levels and pricing set the floor for concrete costs. If demand is high — during a construction boom, for example — Martin Marietta may raise prices or extend lead times. Conversely, in slower periods, they may offer discounts to move inventory.

Lead times for ready-mix concrete typically range from a few days to a few weeks, depending on how busy the local plant is. Martin Marietta plants publish their own lead times and may have different scheduling policies than independent ready-mix suppliers. If you are planning a large pour, it is worth checking Martin Marietta's availability early, since their plants often fill up during peak seasons.

Where Martin Marietta operates and how to find a local facility

Martin Marietta operates quarries and ready-mix plants in most U.S. states, with particularly strong presence in the Southeast, Mid-Atlantic, and Southwest. They also have operations in Canada. You can find a local Martin Marietta facility by visiting their website and using their location finder tool, which shows quarries, ready-mix plants, and distribution centers near your zip code.

If you are working with a contractor or ready-mix supplier, ask them directly whether they source from Martin Marietta. Many contractors have preferred suppliers and may already have pricing agreements in place. If you are sourcing materials yourself, contacting a local Martin Marietta ready-mix plant directly will give you the fastest quote and most accurate lead time for your project.

Martin Marietta versus independent ready-mix suppliers

In many markets, you have a choice between ordering from a Martin Marietta ready-mix plant and ordering from an independent supplier. Martin Marietta plants often have advantages in scale — they can source aggregates cheaply because they own the quarries, and they have large fleets of trucks. This sometimes translates to competitive pricing, especially for large orders.

Independent ready-mix suppliers may offer more flexibility on scheduling or custom mixes, and they may be more responsive to smaller jobs. They typically source aggregates from multiple suppliers, including Martin Marietta, so their costs depend on the broader market. In competitive markets with multiple suppliers, prices tend to be similar; in areas where Martin Marietta is the only major player, their pricing may be higher.

The best approach is to get quotes from both Martin Marietta and at least one independent supplier in your area. Concrete is a commodity, so comparing price, lead time, and truck availability will show you the real difference.

Understanding concrete delivery and scheduling with Martin Marietta

When you order ready-mix concrete, you are ordering a specific volume (measured in cubic yards), a specific strength (measured in PSI, or pounds per square inch), and a specific slump (how thick or thin the concrete is). Martin Marietta plants have standard mixes for common applications — driveways, foundations, slabs — and can also produce custom mixes for specialized work.

Delivery is by concrete truck, and the truck must arrive at your site and pour within a set window, usually 90 minutes. If the concrete sits in the truck longer than that, it begins to harden and becomes unusable. This means you need to have your site prepared, your forms set, and your crew ready before the truck arrives. Martin Marietta plants will give you a delivery window when you place your order, and you pay a fee if you are not ready to receive the truck on time.

Minimum orders vary by location but are often 4 to 5 cubic yards per truck. Some Martin Marietta plants have smaller trucks or offer partial-load options for smaller jobs, but this may cost more per cubic yard. Ask about minimums and partial loads when you get your quote.

What to know about Martin Marietta's pricing and payment terms

Martin Marietta ready-mix concrete is priced per cubic yard, and prices vary widely by region and by mix design. A typical range is $150 to $200 per cubic yard for standard mixes, but prices in high-demand areas or for specialty mixes can be higher. Delivery charges are usually separate and depend on distance from the plant.

Most ready-mix suppliers, including Martin Marietta, require payment at the time of delivery or shortly after. Some contractors have accounts and pay monthly; if you are a one-time customer, expect to pay by check or credit card when the truck arrives. Ask about payment terms when you get your quote, especially if you are ordering multiple loads.

Pricing can fluctuate based on fuel costs, aggregate availability, and demand. If you are planning a project months in advance, get a quote closer to your start date for the most accurate price. Martin Marietta plants will often hold a quote for 30 days, but confirm this when you call.

Frequently Asked Questions

Can I order concrete directly from Martin Marietta for a small driveway or patio?

Yes, but most Martin Marietta ready-mix plants have minimum orders of 4 to 5 cubic yards per truck. A typical driveway or patio may need 3 to 8 cubic yards depending on size. If your project is smaller than the minimum, ask about partial-load options or whether they can combine your order with another customer's. Some plants offer smaller trucks for smaller jobs, though this costs more per yard.

How far in advance do I need to order concrete from Martin Marietta?

For standard mixes during off-peak seasons, you may be able to order a few days ahead. During busy seasons (spring and summer), lead times can stretch to 2 to 4 weeks. Call your local Martin Marietta plant as soon as you know your pour date to check availability. They will tell you the current lead time and hold a delivery slot if you place a deposit.

What if the concrete truck arrives and I am not ready?

Most ready-mix suppliers charge a waiting fee if the truck cannot pour within 15 to 30 minutes of arrival. The fee is typically $50 to $150 per 15-minute increment. Have your site fully prepared, your forms set, and your crew standing by before you schedule delivery. If you think you might run late, call the plant when ready so they can adjust the truck's route.

Does Martin Marietta sell aggregates to homeowners or small contractors?

Martin Marietta primarily sells aggregates in bulk to ready-mix plants and large construction companies. If you need a small amount of gravel or sand for a landscaping project, you will likely need to go through a landscape supply company or a local quarry rather than Martin Marietta directly. However, you can call your local Martin Marietta quarry and ask if they sell to the public or can recommend a retailer.

How do I know if my ready-mix supplier sources from Martin Marietta?

Ask your supplier directly. Many ready-mix plants are owned by Martin Marietta, and others buy aggregates from them. Your supplier can tell you where their concrete comes from. If you are comparing quotes from multiple suppliers, knowing the source of their aggregates can help you understand pricing differences and consistency.