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Roadways Profile

Memphis MPO Functional Classification System Guidelines

interstate highway

Functional classification is the process by which streets and highways are grouped into classes, or systems, according to the role it plays in the overall system of the local, state and nation’s street and highway network. It determines how travel is “directed” within the roadway system by defining the part that each road or street plays in serving the flow of traffic through a highway network. It is a hierarchal system of classification that helps to ensure a comprehensive roadway system that provides logical connectivity and continuity across the entire network.

  • To see current functional classification maps for the Tennessee portion of the Memphis MPO, which includes Shelby County and parts of Fayette County, please visit TDOT's Functional Classification Maps webpage.
  • To see current functional classification maps for the Mississippi portion of the Memphis MPO, which includes DeSoto County and parts of Marshall County, please visit MDOT's map webpage.

The Memphis MPO's Interactive Webmap is also a resource available to view the functional classification of roads in the Memphis MPO, please visit the Interactive Map webpage.

FHWA Functional Classification Guidelines

Traffic Counts

The Tennessee Department of Transportation (TDOT) and Mississippi Department of Transportation (MDOT) also provide traffic counts of all major roads in their respective states. 

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125 North Main St., Suite 450
Memphis, TN 38103
Tel: (901) 636.7190
Fax: (901) 636.9404

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