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Arterials & Highways
Arterials roads provide service to large areas and usually connect with other
arterial roads or highways. They are generally characterized by high
traffic volume, heavy loading and widely varying speeds. Highways are
roads that provide primary transportation routes between geographic locations
such as cities and towns. They are characterized by varying traffic
volume, heavy loading and widely varying speeds.
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| Figure 1: Aurora Avenue |
Figure 2: US 97 South of Blewett Pass |
Assumed Traffic
Due to its extremely varied nature, it is not possible to provide a simple
generalization of arterial and highway traffic. Some highways, such as I-5
in Tacoma may experience as many as 100 million ESALs during their design life,
while others may experience less than 1 million ESALs.
Design Considerations
Arterials and highways require special design considerations. These
pavements should only be designed using an approved
structural design procedure, well-reasoned
mix type selection and
proper mix design.
Construction Considerations
Each arterial and highway construction project requires project-specific
considerations.
Recommended References
- American Association of State Highway and Transportation
Officials (AASHTO). (1993). AASHTO Guide for Design of Pavement
Structures. American Association of
State Highway and Transportation Officials.
Washington, D.C.
(www.aashto.org)
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The Asphalt Institute. (1999).
Thickness Design - Asphalt, Manual Series No. 1. The Asphalt
Institute. Lexington, KY. (www.asphaltinstitute.org)
- National Asphalt Pavement Association (NAPA). (2001). HMA
Pavement Mix Type Selection Guide, Information Series 128. National
Asphalt Pavement Association. Landham, MD.
(www.hotmix.org)
Recommended Minimum Pavement Thickness and Design
(inches)
To be determined using an approved procedure.
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