Collector Street Design

Please Note – Collector or feeder streets carry traffic from the residential streets to the...

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Residential Street Design

Please note – The primary objective of residential and subdivision street design is to provide...

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Tennis Courts

Tennis Courts
Please note – The following information is a general guide for the design, orientation, layout,...

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Sidewalks and Playgrounds

Please note - The following information covers the basic compon­ents of building durable economical asphalt...

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Bicycle and Cart Paths

Please note: The following information on the design, construction, and maintenance of bicycle trails and...

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Residential Driveways

Please note - A residential driveway must be properly constructed in order to be a...

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Intersections & Climbing Lanes

Please note – Intersections come in all lengths, widths, and loading conditions. Conventional asphalt mixes...

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Industrial Pavements

Please note - Industrial drives come in all lengths, widths, loading conditions, and uses, as...

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Porous Asphalt Parking Lots

Please note – The primary objective of parking lot design is to provide safe, efficient...

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Parking Lot Design

Please note – The primary objective of parking lot design is to provide safe, efficient...

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Asphalt is the most versatile and flexible paving material in the world making it the preferred paving material for numerous pavement applications. The facts speak for themselves, of the more than 2.2 million miles of paved roads in the United States; over 94 percent of them are surfaced with asphalt. And it’s not just here in the U.S., over 90% of Canadian roads are asphalt and more than 96% of Mexico’s. The figures for every continent in the world are similar and that’s just the asphalt roads, streets, and highways!

Whether constructing a simple cart path, driveway or designing one of today’s superhighways and airports; asphalt is the paving material of choice.

Asphalt pavements are typically characterized as a layered system where different materials are utilized and each layer contributes to the overall strength and function of the pavement structure. For each application, the correct materials must be selected as well as the appropriate pavement design. Required pavement thickness is a function of subgrade strength, loading, and drainage.

The Virginia Asphalt Association (VAA) developed basic guidance on general structural design, drainage, layer thickness and material selection for a variety of Virginia asphalt pavements.  While not intended to be all-inclusive, the guidance provided herein should at least be considered.  This information is not intended to replace or supersede professional design, engineering services, official agency guidelines or specifications.

All pavement designs are shown above.  Choose the pavement design you would like to view.