The Fantasy Page Includes a few new facilities as well as others' renumbering. http://mryamamoto.50megs.com/fantasy/fantasy.htm
Fictional Freeways By Adam Froehlig. Exit lists of Avenue of the Saints (I-37) and other corridors. http://www.ajfroggie.com/roads/fictional/
Fictional Freeways By Steve. Includes NJ 55, I-895 Philadelphia, and multi-state route 777. http://www.angelfire.com/nj4/fictionalfreeways/
Fictional Freeways By Swamphen Publishing. Southern United States, primarily Florida. http://www.swamphen.net/roads/fic/
List of Fictional Interstates Gives text exit listings for new U.S. Interstates and other routes as well as extensions of existing ones. http://www.geocities.com/mrwheels2005/mrwheelsfictionalinterstates.html
The Ultimate Interstate System Provides an overview of what the system could look like in the future according to the webmaster. Includes exit listings for all primary routes. http://www.geocities.com/ultimateinterstatesystem/
The US Highways that never were By Robert V. Droz. Alignments for US 0, US A1A, US 39, US 47, US 88, US 100, and US 402. Also, there is a list of the US highway numbers still not used. http://www.us-highways.com/us0999.htm