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Fix the Highways: Suggestions for New U.S. Highways
The Ultimate Interstate System!
Froggie's Fictional Freeways
Interstate 505: Tacoma-Bremerton-Poulsbo Freeway
Interstate 685: Atlanta's Superbelt
Interstate Improvement Index
Matt Salek's Fictional Freeways
Mr. Wheels' List of Fictional Interstates
Shady Jay's Mock Exit Listings
Steve's Fictional Freeways
Swamphen's Fictional Freeways
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AASHTO (American Association of State Highway Transportation Officials)
MUTCD (Manual on Uniform Traffic Control Devices)
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Williams Automotive Group (Atlanta, GA)
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Auto City (San Diego, CA)
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David Carey's Roads & Highways Directory
D.C. Roads
Doug Parker's Road Dogs Directory
Dr. SPUI
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Gribble Nation
Hawaii Highways
H.B. Elkins' Millennium Highway
Heartland Expressway
Henry Watson's Online Freeway
Highway Deficiencies
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Interstate 69
Interstates 73 and 74 in North Carolina
Interstate 83: Greensboro-Baltimore Corridor
Interstate 570 South Park
Interstate 2000
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Michelle Skinner's Interstate Page
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Road Trip!
RoadTrip America
Road Trip USA
Roads & Highways Open Directory
Roads to the Future
Route 40: The National Road
ScenicDrivesOnline.com
Shields Up!
SignMaker
Signal Fan
Southern Highroads Trail
Steve Alpert's Roads
Streetlight Freak
Streetlight Heaven
The Expressway Site
The 1999 Road to Ruin Report
Three-Digit Interstates
Toll Roads News
TrippyDrive 71
Two-Digit Interstate Rankings
U.S. Highways
U.S. 101: Guide to the Pacific Coast Highway
U.S. 6 Tourist Association
U.S. Route 20
WWTBAM (Kurumi Edition)
ZZYZX List of Interstates
Other U.S. Highways
Famous Route Oddities
New U.S. Route Ideas