| Fictional Freeways | | By Adam Froehlig. Exit lists of Avenue of the Saints (I-37) and other corridors. |
| Fictional Freeways | | By Steve. Includes NJ 55, I-895 Philadelphia, and multi-state route 777. |
| Fictional Freeways | | From the site Western New York Roads. Examples cover most of the state. |
| 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. |
| 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. | |
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