Interstate275Florida.com
- Gives information and background on the highway and other highways in the Tampa Bay area.
- http://interstate275florida.com/

Orange County Traffic Engineering
- Contains traffic signal locations and traffic counts.
- http://www.orangecountyfl.net/cms/DEPT/pw/traffic/

Jacksonville Transportation Authority
- In charge of many road projects in this Florida city. Lists improvement details. Also includes history.
- http://www.jtaonthemove.com/

The Swamphen Superhighway
- Covers the Big Bend region on the Gulf of Mexico as well as adjacent parts of Alabama and Georgia.
- http://www.swamphen.net/roads/

Tampa-Hillsborough County Expressway Authority
- Includes toll information.
- http://www.tampa-xway.com/

SunPass Electronic Toll Collection
- Used on most of the toll roads in the state.
- http://www.sunpass.com/

Osceola Parkway
- Connects Disney World to Florida's Turnpike towards Miami. Includes the O-PASS electronic toll collection system, cross compatible with the Orlando-Orange County Expressway Authority's E-PASS.
- http://www.osceola.org/index.cfm/sDepartment/Osceola%20Parkway

Miami-Dade Expressway Authority
- Maintains the toll roads in Miami.
- http://www.mdx-way.com/

Historic Roads and Highways of Florida
- Very detailed historical information about US routes and Interstates.
- http://www.us-highways.com/flus.htm

Florida in Kodachrome
- Detailed information about U.S. highways including photos of colored route markers formerly used for them.
- http://www.us-highways.com/flausa.htm

Pre 1946 Florida State Highway System
- Route log.
- http://www.us-highways.com/oldfl.htm

Florida's Turnpike
- Official site. Includes interchanges, toll rates, construction information, and history.
- http://www.dot.state.fl.us/turnpikepio/

Orlando-Orange County Expressway Authority
- Maps and construction updates for central Florida toll roads, and information about the E-PASS electronic toll collection system.
- http://www.oocea.com/