The Transportation Data and Analytics Office coordinates and maintains data on various highway system designations. Federal Aid Systems, the National Highway System and Functional Classification are developed in a cooperative process with local officials and FDOT according to Federal Highway Administration (FHWA) requirements, and approved by FHWA before becoming effective. The Strategic Intermodal System (SIS) replaced the Florida Intrastate Highway System (FIHS) in 2003 and is designated by FDOT, with input from local governments, highway users, and other interested parties.

State Road numbers are assigned by FDOT and County Road numbers by the counties (with guidance from FDOT). U.S. and Interstate numbers are approved by the American Association of State Highway and Transportation Officials (AASHTO).


State Highway System (SHS)

National Highway System (NHS)

Handbooks and Procedures

    For further information, please contact Jerry Scott or call (850) 414-4714