OKHighways.com
- Includes photographs, route guides, and focus pages covering Oklahoma City and Tulsa.
- http://www.okhighways.com/

Oklahoma Highway History
- Includes relevant information on bridges and U.S.-numbered routes.
- http://www.wkinsler.com/highways/

Roads.Tulok.Net Road Trips
- Various aspects including termini and a proposal for a Tulsa beltway.
- http://roads.tulok.net/

Oklahoma Department of Transportation
- Provides departmental organization and contacts, aeronautic, highway, public transportation, railroad, and waterway information, contracts, proposals, and construction standards and specifications as well as public service information and links to related
- http://www.okladot.state.ok.us/

Oklahoma Turnpike Authority
- Provides organizational history and background information, turnpike maps, engineering drawings, and extension information, toll collection reports, and information and contacts for the PikePass automated toll collection system.
- http://www.pikepass.com/