Interchanges Roads and Highways

Interchanges are complex intersections between two or more roads involving connector ramps. The main roadways in interchanges are usually grade-separated (use of overpasses), though some unusual examples include at-grade intersections where there usually are grade separations.

• Top/Recreation/Roads and Highways/Exit Lists

• Mike the Actuary's Musings - Roadgeek - Includes aerial photographs and commentary about certain features.
  
• Highway Feature of the Week - Large archive of maps and descriptions of unusual or complicated facilities, primarily in the United States.
  
• US Highway Interchange Browser - Covers Michigan and North Carolina.
  
• The Parallel Flow Intersection - A specialized intersection. Page includes diagrams and research.
  
• WhereRoadsMeet - Includes aerial photographs and descriptions of unusual or complicated facilities in the United States.
  
• Michigan Left Turn - Describes how this unusual intersection feature works, including history.
  
• Interstate Interchange Browser - Uses Google Maps to locate every interchange on the U.S. Interstate system.
  
• An VRML rendering of the 15-91 interchange, Corona California. - A 4-level stack with one loop. Requires a VRML plugin to view.
  
• Highway-Intersections.net - Compendium of map images from various European countries.
  
• Interchanges - Page describing types found in the United Kingdom. Includes a link to the Bad Junctions page.
  
• Images of Britain - Spaghetti Junction - The M6 at the A38(M) in Birmingham.
  
• Museum of Dumb Highway Design - Aerial photos of and commentary on various interchanges which the author finds unusual or substandard.
  
• California Freeway Interchanges - Photographs from around the state.
  
• Unusual Interchanges - Diagrams and commentary of various ones in the East-Central U.S.
  
• Continuous Flow Intersections - Engineering firm page illustrating the connections in this feature. Includes illustrations and a video demonstration.
  
  

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