Collector Streets

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: Collector Streets

Figures 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.

Vehicle Type Vehicles
per day
Vehicles
per year
ESALs
per year
Cars and Light Trucks 3,500 1,300,000 900
Medium Trucks and Buses 100 36,500 9,000
Heavy Trucks and Buses 20 7,000 10,000
Totals 3,620 1,343,500 19,900

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)
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