• National Functional Classification Maps in Michigan
National Functional Classification is a transportation planning tool. All public roads are classified according to function -- this allows roads to be studied and compared across different regions of the state or the entire country. National Functional Classification is also used to determine which roads are eligible to receive federal funds (federal-aid) for improvements. National Functional Classification may be abbreviated as NFC. Try the links on this page to find out more or send an e-mail to mdot-nfc@michigan.gov with a specific information request.

• Federal Aid Information
Roads are defined as federal-aid highways (and are eligible for federal-aid) if they have an NFC other than rural minor collector or local. Rural minor collectors are also eligible for federal-aid, per current federal law.

• New County and Urban Area Maps as of 2008

• Introduction & Definitions

• Percentage Guidelines

• Michigan's Use of NFC

• Changing NFC

• NFC & Federal-aid

• Guidelines for Updating Federal-aid Urban Boundaries 

• Michigan's National Highway System & Maps