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).

Products

State Highway System (SHS)

• State Highway System Map - PDF 746 KB - Roads under the jurisdiction of the Florida Department of Transportation, state-chartered expressway authorities, and other state agencies.
• Strategic Intermodal System (SIS) - Highways and other modes important to transportation in Florida.
• Functional Classification and Urban Boundary Maps - These maps are used to determine the proper Functional Classification and Urban Boundary designations within the Department's Roadway Characteristics Inventory (RCI) system. Functional Classification is the assignment of roadways into systems according to the character of service they provide in relation to the total roadway network. Urban Boundaries designate if a roadway segment is located in a rural or urban area and whether or not it is within a municipality.

National Highway System (NHS)

• Federal Aid Systems - Types of eligibility for federal aid.
• National Highway System (NHS) Maps - Highways important for national connectivity.
• STRAHNET (Strategic Highway Network) - Highways important for national defense. See the STRAHNET maps (PDF - 15.4 MB).

Handbooks and Procedures

• Urban Boundary and Functional Classification Handbook (February 2013) - PDF 915 KB - Classification of highways by the way they function relative to the highway network.
• Transportation System Jurisdiction and Numbering Handbook (August 2017) - PDF 1.10 MB - Transferring roads to and from the State Highway System, and adding new roads. State Road (SR) numbers, County Road (CR) numbers, U.S. Route numbers, and Interstate numbers.
• Transportation System Jurisdiction and Numbering Procedure (PDF 252 KB)
  Topic No. 525-020-010, Effective October 19, 2016
• Urban Boundaries and Functional Classification of Roadways Procedure (PDF 47.8 KB)
  Topic No. 525-020-311, Effective January 19, 2018