Upgrading a Minnesota driveway with asphalt millings can save you money compared to new pavement. This recycled material offers a firm surface that binds together during hot summers.
Whether asphalt millings are better than gravel depends on your budget and how much upkeep you want to do. Asphalt millings provide a firm surface that makes less dust and keeps stones from moving better than Class 5 gravel. Because these millings have old tar, they pack down under heat and tires to look like a regular driveway. They cost about 40 to 60 percent less than new asphalt while lasting for many years.
However, Class 5 gravel is the best choice for drainage and strong base layers because water moves through the rocks. Minnesota Aggregates often suggests using both materials for the best results in the Twin Cities. A Class 5 gravel base makes a strong foundation, while a top layer of millings gives a clean look that survives local winters.
Knowing the traits of each material helps you pick the right one for your land. You must know how these are made and how they handle the weather before you start. Our guide to What Are Asphalt Millings and Class 5 Gravel? is the first step in making a smart choice. The path begins with
Are Asphalt Millings Better Than Gravel: What Are Asphalt Millings and Class 5 Gravel?
Choosing the right material for your driveway is a big choice. In Minnesota, two of the most popular picks are asphalt millings and Class 5 gravel. Each product has its own hard traits and pros. While they may look similar from a distance, they act very differently once they are on the ground.
Recycled Asphalt Millings (RAP)
Recycled asphalt pavement, or RAP, comes from old roads and parking lots. When crews grind up old asphalt, they create millings. These bits still have old tar and oil on them. This old binder helps the rocks stick to each other. When it gets hot out, the tar softens and acts like glue. Then, the weight of cars or trucks packs the material down into a semi-solid surface. It looks and feels a lot like a paved road but costs much less.
According to the Environmental Protection Agency, reusing old asphalt helps the earth by keeping waste out of local landfills.
MnDOT Spec Class 5 Gravel
Class 5 gravel is the standard choice for road bases in the Twin Cities metro. It must meet a strict set of rules called MnDOT Spec 3138. This material is a mix of crushed limestone and fine bits. The rocks range from three-quarters of an inch down to dust. The “fines” are small pieces that fill the gaps between the larger rocks.
When you pack it down, these bits lock together to form a very hard mat. This tight stone bond makes the surface very stable for heavy loads. Many people choose Class 5 gravel delivery because it works well for both driveways and equipment pads.
Material Traits and Compaction
The way these materials bind is what sets them apart. Asphalt millings rely on a chemical bond from the old bitumen. As the sun heats the drive, the oil gets tacky and binds the rocks. In contrast, Class 5 gravel uses a physical bond. The sharp edges of the crushed limestone wedge into each other. This creates a firm layer that stays solid even in the shade. Millings need the sun’s heat to reach their full strength over time, while gravel stays firm in all light levels.
Aggregate size also plays a big role in how these materials work. Class 5 gravel is graded to have the right mix of large and small stone. This helps it hold weight without shifting or rutting. Millings can vary in size based on the machine used to grind the road. When you ask are asphalt millings better than gravel, you should look at your soil and goals. Different asphalt millings delivery options can fit various site needs. Gravel allows water to pass through more easily, but millings create a tighter seal that helps shed rain off to the sides.
Both items are heavy and need strong trucks to move them. Minnesota Aggregates uses a fleet that can carry between 3 and 22 cubic yards at once. This helps you get the right amount for your job in one trip. Proper prep, like grading the soil first, is key for both. Without a good base, even the best rocks will shift as the seasons change.
Asphalt Millings vs Class 5 Gravel: Cost Comparison
When you compare material prices, Class 5 gravel is the most budget-friendly choice. Minnesota Aggregates sells Class 5 gravel for about $10.75 per cubic yard. This makes it a great pick for long rural drives or as a sturdy base for other materials. While the price is low, this aggregate meets strict standards for strength and load-bearing use. Many local contractors use it to build a firm foundation before they add a top layer.
Upfront Material and Install Costs
Asphalt millings cost more than gravel but much less than new asphalt. You can expect to pay about $21 per cubic yard for millings. When you look at the total recycled asphalt driveway cost per square foot, it usually runs between $3 and $6 for materials and work. This is about 40% to 60% cheaper than laying a fresh coat of hot-mix asphalt. Since millings are recycled from old roads, they give a semi-solid surface at a fraction of the price of a standard paved drive.
| Criteria | Asphalt Millings | Class 5 Gravel |
|---|---|---|
| Material Cost | About $21 per yard | About $10.75 per yard |
| Installed Cost | $3 to $6 per sq ft | Varies by site prep |
| Delivery Time | 1 to 3 business days | 3 to 5 business days |
| Long-term Value | High (no resurfacing) | Good (easy to repair) |
Value and Upkeep
The true cost of a driveway includes more than the first bill. Asphalt millings offer high value because they need very little care once they bind together. They do not need sealcoating or resurfacing like standard asphalt. Over time, millings get harder as they settle and heat up in the sun. This means you spend less on repairs or fresh material in the coming years. You can check the road base material cost guide to see how these savings add up over time.
Gravel is cheap to buy but may need more work to stay in top shape. In Minnesota, the freeze-thaw cycle can cause gravel to shift or form ruts after a hard winter. You might need to regrade the surface or add a few loads of new material every few years.
However, gravel is very easy to fix. A quick pass with a blade or a fresh layer of rock can make a worn drive look new again. According to the EPA, using recycled materials like millings can also help lower the impact of your project by keeping old pavement out of landfills.
How Do They Perform in Minnesota’s Freeze-Thaw Climate?
Minnesota weather is hard on driveways. The ground freezes and thaws many times each year. This movement can crack or ruin poor surfaces. When you ask are asphalt millings better than gravel, the answer often depends on how the material handles these shifts. Both asphalt millings and Class 5 gravel are strong choices for our local climate, but they react to the cycle in different ways.
Freeze-Thaw Durability
Asphalt millings contain old tar and oil. In the summer heat, this binder softens and helps the millings stick together. This creates a semi-solid surface that acts like a bridge over soft soil. According to the Environmental Protection Agency, using recycled asphalt saves energy and keeps old roads out of landfills. Because millings are flexible, they can move slightly during a spring thaw without breaking apart like solid asphalt might.
Class 5 gravel uses a mix of crushed rock and fine particles to create a dense matrix. This material follows MnDOT Spec 3138 standards for road base. It compacts into a hard surface that resists rutting even when the ground is wet. Because Class 5 gravel is made of natural stone, it does not soften in the sun. It stays firm and stable through every season, which makes it a top pick for heavy equipment pads and rural roads.
Drainage and Winter Care
Proper water flow is the best way to stop frost heaving. Class 5 gravel allows water to drain through the stone layers while keeping its strength. This makes Class 5 gravel delivery and specs very important for wet sites or long lanes. Millings can compact so tightly that they become nearly waterproof. If your driveway is flat, you must grade it carefully to keep water from pooling on top of the bound asphalt.
Winter maintenance also differs between the two. You can plow both surfaces, but you must be careful with the blade depth. Millings are less likely to scatter into your grass than loose gravel. However, once millings bind together, they are harder to reshape if a frost heave does occur. Class 5 gravel is easier to fix after a rough winter. You can simply add more material or regrade the surface to fill in low spots that appear after the spring thaw.
Long-term maintenance is often the deciding factor for Minnesota homeowners. The material that costs less upfront may need more work and money over the years to stay in good shape. Here is how the two materials compare on upkeep and lifespan.
Maintenance and Longevity: Which Material Lasts Longer?
Asphalt Millings Maintenance
Once asphalt millings are compacted, they require very little ongoing care. The material binds together over time and gets harder with heat and traffic. You do not need to sealcoat or resurface millings the way you do with traditional hot-mix asphalt. This saves both time and money over the life of the driveway.
Millings also produce less dust than loose gravel and do not scatter into your lawn when driven over. Snow plowing is easier because the surface is more solid. However, if a rut or low spot does develop, millings are harder to repair than gravel. You may need a professional with a roller to re-compact the area or add fresh millings.
Class 5 Gravel Maintenance
Gravel driveways need more routine attention than millings. After a Minnesota winter, the freeze-thaw cycle can push stones aside and create ruts or soft spots. Spring is the time when most gravel owners need to regrade their driveway, fill low areas, and add fresh gravel to bring the surface back to grade.
The upside is that gravel is very easy to repair. A tractor with a blade or a skid steer can regrade a gravel driveway in a few hours. Adding a few extra yards of Class 5 gravel every couple of years can keep the surface in excellent shape. Many homeowners find this maintenance schedule acceptable because it spreads the cost out over time rather than requiring a large upfront investment.
Lifespan Comparison
A properly installed asphalt millings driveway can last 10 to 20 years in Minnesota before major work is needed. The binder in the millings continues to harden over time, which actually strengthens the surface as it ages. Class 5 gravel can last indefinitely with regular maintenance because it is a non-degrading stone product. The key difference is that millings offer a low-maintenance period followed by potential reinstallation, while gravel requires consistent but smaller upkeep efforts every year.
Drainage and Installation: Key Differences
One major reason why people ask if asphalt millings are better than gravel is how the two handle water. In a wet state like Minnesota, your driveway must move water away from the base. Class 5 gravel and asphalt millings manage this task in very different ways. Choosing the right material depends on your site slope and how much rain or snow melt you expect to see.
Water Flow and Percolation
Class 5 gravel has great drainage because of its physical shape. This material meets MnDOT Spec 3138 standards, which ensure a mix of 3/4-inch rock down to fine bits. This blend creates a stable surface that still lets water seep through into the ground. It is a smart choice for low spots or flat areas where water might pool during the spring thaw.
Asphalt millings act more like a solid surface once they bind together. Over time, the sun and weight of cars cause the millings to pack into a tight layer. This layer can become nearly waterproof, which means water runs off the top rather than soaking through. If your driveway is not graded right, this runoff can cause puddles or washouts at the edges of the drive.
Grading and Base Prep
Good installation starts with a solid base for both materials. You must clear the ground of soft dirt and roots to prevent sinking. For a millings driveway, many experts suggest using Class 5 gravel as a base layer first. This provides the strength needed to support heavy trucks without the top layer cracking or shifting during a deep freeze.
The shape of the driveway also matters for millings. Since they do not drain as well as gravel, the surface needs a slight crown in the center. This curve sends water to the sides and keeps it from sitting on the top. Gravel is more forgiving if the grade is slightly off, but it still needs a firm base to resist ruts under heavy tires.
Climate and Spring Thaw
Minnesota’s freeze-thaw cycle is a tough test for any driveway. In the spring, the ground thaws from the top down. This can trap water under the surface and make the driveway soft. Class 5 gravel handles this well by letting moisture escape through its pores. Gravel stays firm year-round and is easy to fix with a fresh load of material if small ruts appear after a rough winter.
Millings offer a clean, dust-free surface that holds up well against snow plows. Once they set, they do not scatter like loose stones. But the tight seal of millings means you must plan for where the meltwater will go. If you have a steep slope or a complex yard, the way you set up each material will decide how long your driveway lasts.
There is no single right answer for every property. The best choice depends on your budget, the slope of your land. The amount of traffic your driveway sees, and how much maintenance you want to handle each year.
Which Driveway Material Is Right for Your Minnesota Property?
When to Choose Asphalt Millings
Asphalt millings are the better choice when you want a firm, clean surface that looks like a paved driveway. They work well on long rural driveways where you want less dust and stone scatter. If you plan to plow snow in the winter, millings provide a smoother surface that snow can slide across without grabbing loose stones.
Millings are also ideal if you want a low-maintenance surface. Once they are compacted and have been through a few sunny days, the binder activates and locks the material in place. You can drive on them right away and they will get harder each summer. For homeowners who want a “set it and forget it” solution, millings are the stronger option.
When to Choose Class 5 Gravel
Class 5 gravel is the better choice for a base layer or when drainage is a concern. If your property sits in a low area or has poor natural drainage, gravel will handle water much better than millings. The crushed limestone lets water percolate through while maintaining stability.
Gravel is also the right pick if you have a tight budget. At about $10.75 per yard, Class 5 gravel is roughly half the cost of millings per yard. And if you plan to eventually pave the driveway with hot-mix asphalt, Class 5 gravel is the standard base material that contractors expect to find underneath new pavement.
The Combined Approach: Best of Both Worlds
Many experienced contractors suggest using both materials together. Start with 4 to 6 inches of compacted Class 5 gravel as your base layer. This provides strength, drainage, and a stable foundation that resists frost heave. Then top it with 2 to 3 inches of asphalt millings for a clean, dust-free surface that looks like pavement.
This hybrid approach takes advantage of each material’s strengths. The gravel base handles drainage and load-bearing while the millings top provides the appearance and low maintenance of a paved surface. Minnesota Aggregates can help you plan the right material combination for your specific property and needs. Check their guide to types of gravel for driveways for more details on what works best in different situations.
Here are answers to common questions about asphalt millings and gravel for Minnesota driveways.
Frequently Asked Questions
What are the disadvantages of asphalt millings?
The main drawback is poor drainage. Millings compact into a nearly waterproof surface, so water runs off instead of soaking through. This means you need careful grading to prevent puddles. Millings can also soften on very hot days and may be harder to repair if ruts form compared to loose gravel that can simply be regraded.
Will water drain through asphalt millings?
Not very well. Asphalt millings pack down so tightly that they become almost impermeable once fully compacted. Unlike gravel that lets water pass through, millings force water to run off the surface. This is why proper grading and crowning are critical for a millings driveway. If your property is in a low-lying area, gravel is usually the better drainage choice.
Are millings good to put in a gravel driveway?
Yes. Placing asphalt millings over an existing gravel driveway is a common upgrade. The gravel base provides drainage while the millings top layer creates a firmer, cleaner surface. This combination works well because the gravel handles water movement and the millings lock together for a dust-free driving surface. Many Minnesota homeowners use this method to improve old gravel drives without a full reconstruction.
How long will a millings driveway last?
With proper installation and a good base, asphalt millings can last 10 to 20 years. The binder in the millings continues to harden over time, so the surface actually gets stronger as it ages. However, the lifespan depends on traffic levels, base preparation, and how well water is managed. A millings driveway on a stable Class 5 gravel base with good drainage will outlast one installed directly over poor soil.
Can you plow snow on asphalt millings?
Yes, you can plow asphalt millings just like a paved driveway. The compacted surface holds together well under a plow blade. Millings are less likely to scatter into your lawn than loose gravel when snow is pushed aside. Just be careful not to set the blade too low, which could dig into the surface before the material has fully hardened.
Ready to start your driveway project? Minnesota Aggregates delivers both asphalt millings and Class 5 gravel across the Twin Cities metro area and greater Minnesota.
Get Your Driveway Materials Delivered
Choosing between asphalt millings and Class 5 gravel does not have to be complicated. The team at Minnesota Aggregates can help you decide which material or combination works best for your property. They run their own fleet of trucks and deliver throughout the Twin Cities metro including Minneapolis, St. Paul, and all surrounding suburbs.
Call (612) 772-3677 to discuss your project and get a free quote. You can also request a quote online to get delivery scheduled in as little as 1 to 3 business days for millings or 3 to 5 days for Class 5 gravel. No job is too big or too small , from a single load for a home driveway to multiple tandem loads for a commercial lot.