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Ohio Roadway Functional Class

Ohio roadway system


Major Programs staff administer the instructions and procedures for using functional class data. Functional Class is the grouping of roads, streets, highways in a hierarchy based on the type of highway service they provide.


This document provides recommended guidance for assigning functional classification to roadways and streets within Ohio. It is based on Highway Functional Classification: Concepts, Criteria and Procedures, 2013 Edition published by the Federal Highway Administration (FHWA), which can be downloaded from the following link:

The Purpose for Classifying Highways

Highway functional classification is used to determine which roads, streets and highways are eligible for federal transportation funds. It is used to establish design criteria for various roadway features, and also serves as a management tool to measure a route’s importance in project selection and program management.

Download the ODOT Highway Functional Classification System Concepts, Procedures and Instructions in the Attachment box to learn more (below in mobile, to the right on a desktop).