Collector streets connect the residential streets with arterial routes.
They may have significant truck and bus traffic and their closure for paving
could create substantial commuter delays.
Figures 1 and 2: Collector
Streets
Assumed Traffic
Low to intermediate speed, moderate traffic volume and some heavy loadings. Truck traffic
can often include substantial amounts of delivery vehicles, school buses and,
sometimes, public transit buses.
Design Considerations
Collector street traffic loading can vary widely. High traffic streets
(specifically those with substantially higher heavy truck and bus traffic levels
than those listed above) should be designed using an
approved structural design
procedure.
Construction Considerations
Consideration should be given to paving in two separate lifts to allow street
use with only minimal delays during construction. Any localized failures
in the first lift can be repaired before final lift placement.
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)
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)
