See also:

• Regional: North America: United States: Ohio: Transportation  (6)
• Regional: North America: United States: Ohio: Travel and Tourism  (60)

• Ohio Department of Transportation   - Official website.
• The Unofficial Ohio State Highways Web Site   - Route log including former routings.

• Cincinnati Roads - Contains video clips of various examples.
• Cincinnati-Transit.net - Contains details on transit, including bridges and major highways.
• David Smith's Columbus Roads - Includes photographs, lane diagrams, and an opinion page.
• Duck Creek Road - Overview of this and other area streets in Cincinnati which were altered to accommodate the construction of Interstate 71.
• Lake Erie Circle Tour Online - Part of the Great Lakes Circle Tours.
• North South Transportation Initiative - Plan involving I-75 and other modes of transportation between the area north of Dayton and Northern Kentucky. Includes maps, FAQ, and feedback option.
• The Ohio Construction Information Association - OCIA services include research for anyone seeking data on the infrastructure, construction issues, multimodal transportation planning, and water and sewer issues.
• The Ohio Regional Road Pages - Coverage of each region of the state including photographs, history, and links.
• Ohio Route One - Discusses the 1960s routing of this route.
• Ohio State Route 66 Internet Tour - A guide to this road following the western boundary.
• Ohio Turnpike Commission - Official page. Includes Turnpike toll rates and construction information.