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Gravel is the least expensive driveway type, costing between $1 and $3 per square foot. That said, you’ll likely need to add new gravel filling once or twice a year which can add up in additional costs over time. In addition, be prepared to regularly rake the gravel into place to keep your gravel driveway looking its best.

Asphalt is not the same thing as blacktop. Blacktop is a type of asphalt, but contains less bitumen, making it less durable than asphalt. Asphalt is a better option for major highways, streets, and driveways, while blacktop is more suitable to playgrounds.

Instead of a set number of types, asphalt comes in variations designed for different needs. Some are categorized by temperature—hot mix, warm mix, and cold mix. Others are sorted by composition, like dense-graded, gap-graded (such as Stone Matrix Asphalt), porous, and mastic asphalt. There are also modified versions with added compounds like polymers, rubber, or emulsions. Instead of focusing on a number, it may be more useful to understand how contractors customize asphalt for durability, climate, and traffic conditions.

Gravel driveways are the most economical driveway material, followed pretty closely by asphalt and concrete. At about $1 to $3 per square foot, gravel is about a third of the cost of either of the more common alternatives. But, not everyone likes the look and feel of the material and may opt to pay more for something that looks better.