Alabama
Alabama Department of Transportation, Alabama Roads, Dan's Highway Pages, Foley Beach Express, Joe's Alabama Road History Page, The Swamphen Superhighway
Alaska
Alaska Department of Transportation & Public F, Alaska Roads, Alaska's Remote Wilderness Highways, Alaska's US Highway(s), Highways of The North
California
91 Express Lanes, Advanced Highway Maintenance and Construction Tech, Bay Area Miata Association Backroads Index, California Department of Transportation, California FasTrak, California Highway Patrol Traffic Incident Informa, California Highway Routes, California Highways @ WestCoastRoads.com, California Highways and Bridges, California Highways Home Page
Colorado
Central City Parkway, Colorado Department of Transportation, E-470 Public Highway Authority, Front Range Toll Road, The Highways of Colorado
Connecticut
AARoadtrips: Connecticut Gateway, America's Byways: Connecticut, Committee for US 7 Extension, Connecticut Department of Transportation, Connecticut Roads, Connecticut Roadtrips, Connecticut State Route Ends, Connecticut Turnpike, Connecticut: Highways to Nowhere, Freeways of Hartford and Hampden Counties
Delaware
Delaware Department of Transportation, Delaware Highway Guides, Delaware Highways Page, Delaware Route 1 - Korean War Veterans Highway, Delmarva Highways
Florida
Bayciti, Florida Department of Transportation, Florida in Kodachrome, Florida's Great Renumbering, Florida's Turnpike, FLRoads.net, Historic Roads and Highways of Florida, Jacksonville Transportation Authority, Jacksonville's Highway Page, Miami-Dade Expressway Authority
Georgia
Atlanta's Outer Loop, Driving down Peachtree, Georgia Department of Transportation, Georgia Highways, Georgia Roads, MPG Roads, Old Atlanta Street Names, The Atlanta Roadways Digest, The Swamphen Superhighway, Unofficial Georgia Highways Web Page
Hawaii
Hawaii Department of Transportation, Hawaii Highways, HawaiiRoads.com, Interstate H-3 Freeway
Illinois
336 Coalition, Chicago Department of Transportation, Illinois Department of Transportation, Illinois Ends, Illinois Highways Page, Illinois Road Photos, Illinois Tollway, Illinois Tollway Oases: Then and Now, Lake Michigan Circle Tour, Marshall County Highway News From the Past
Indiana
Arenn's Transportation Pages, Darren's Louisville Transportation Page, Great Lakes Circle Tour, Indiana Department of Transportation, Michiana Roads, U.S. 31 Coalition, Inc.
Kansas
Kansas Department of Transportation (KDOT), Kansas Highways, Kansas Turnpike Authority, Mo-Kan Roadgeek
Kentucky
2000 Legislative Session, 511 - Traffic and Travel Information, American Byways, Back Roads Kentucky, Cedar Creek Lake, Cincinnati-Transit.net, Darren's Louisville Transportation Site, Division of Program Management, Elizabethtown to Radcliff Connector (E2RC), Highway 127 Yard Sale
Louisiana
Future I-49 South, Future I-49, Lafayette to New Orleans, I49 South, Lafayette Metropolitan Expressway Commission, Louisiana Department of Transportation and Develop, Louisiana Interstates
Maryland
Capital Beltway Corridor Transportation Study, Central PA/MD Roads, Delmarva Highways, Erin's HOV Flyover tribute page, Maryland Department of Transportation, Maryland Roads, Roads to the Future, Takoma Park Highway Design Studio
Massachusetts
Boston Post Road: Milestones of History, Boston Traffic and Transit, Boston's Cancelled Highways, BostonRoads.com, David Chesler's Road Sign Page, Freeways of Hartford and Hampden Counties, Gorp: The Mohawk Trail, John Carr's Maps, Massachusetts Highway Department, Massachusetts Sportbike Roads
Michigan
A Guide to Highways in Upper Michigan, BT's Detroit Road Guide, County Road Association of Michigan, Detroit Highways, Great Lakes Circle Tour, Jody Aho's Northern Minnesota, Northern Wisco, Michiana Roads, Michigan Department of Transportation, Michigan State Highways, MPG Roads
Minnesota
Jody Aho's Northern Minnesota, Northern Wisco, Minnesota Department of Transportation, North Star Highways, The Unofficial Minnesota Highways Page
Mississippi
Joe's Mississippi Road History Page, Magnolia Meanderings, Mississippi Department of Transportation, MSU TRC Homepage, Roadgeekery at LordSutch.com
Missouri
Citizens for a Four-lane Highway 36, Missouri Department of Transportation, Missouri Highways, Mo-Kan Roadgeek, St. Louis Highways, The Cape Rock ; Roads and Highways, The New I-64, The Oak Ridge I-55 Interchange
Nebraska
Lincoln Metropolitan Planning Organization, Nebraska Department of Roads, Nebraska Roads, The Nebraska Highways Page
Nevada
KVBC TV-3 Traffic Solutions, Nevada Department of Transportation, Nevada Highways, Nevada Highways of 1935
New Hampshire
Granite State Roads, Granitehighways.com, New Hampshire Department of Transportation, NHHighways
New Jersey
Atlantic City Expressway, Bergen Arches Project, Citizens Against Tolls, DVRPC - Delaware Valley Regional Planning Commissi, Highways of Bergen County, New Jersey, Jeff Taylor's New Jersey roads pages, New Jersey and New York City Expressways, New Jersey Department of Transportation, New Jersey Highways, New Jersey Turnpike Authority Home Page
New Mexico
New Mexico State Highway and Transportation Depart, The Unofficial New Mexico Highways Page
New York
New York City, BigfootDave.com, Broome County Roads, Capital Highways, Empire State Roads, Genesee Expressway, Jeff's Expressways Site, LIROADS, Long Island Motor Parkway, Mike Slesinski's Quickway, New York Routes
North Carolina
Interstates 73 and 74 in North Carolina, Newsobserver.com Traffic, North Carolina Department of Transportation, North Shore Road Project EIS, Roads Traffic, Tail of the Dragon, The Highways of North Carolina, The Unofficial I-26 Construction Madison County No, Wake County Roads
Ohio
Cincinnati-Transit.net, David Smith's Columbus Roads, Duck Creek Road, Lake Erie Circle Tour Online, North South Transportation Initiative, Ohio Department of Transportation, Ohio Highways, Ohio State Route 66 Internet Tour, Ohio Turnpike Commission, Roadfan Stuff
Oklahoma
Oklahoma Department of Transportation, Oklahoma Highway History, Oklahoma Turnpike Authority, OKRoads.com, Roads.Tulok.Net Road Trips
Oregon
Northwest Highways, Oregon Department of Transportation, Oregon Highways and Routes, ORoads
Pennsylvania
Bridges and Tunnels of Allegheny County and Pittsb, Central PA/MD Roads, City of Pittsburgh Step Trek, Fayette Expressway Completion Organization, Future Interstate 99 North of I-80, Meadville Area Highways, MPG Roads, Old Route 61, Penn-York Roads, Pennsylvania and Pittsburgh Roads
Rhode Island
Regional Traffic Report, Rhode Island Department of Transportation, Rhode Island Highways Page, USRoute1.Net Rhode Island Route Log
South Carolina
South Carolina Department of Transportation, South Carolina Highway Page, South Carolina Highways, South Carolina Highways, Southern Connector, The Conway Bypass, US Highways - South Carolina
Tennessee
Foothills Parkway Missing Link Tour, Highways of Henderson County, Memphis Freeways, Roadgeekery at LordSutch.com, Tail of the Dragon, Tennessee Department of Transportation, Tennessee's US Highways
Texas
Austin Toll Party, CorridorWatch.org, Grand Parkway, Houston Highways, North Texas Tollway Authority, Project Pegasus, Texas Department of Transportation, Texas Highway Routes, Texas HighwayMan Pages, TexasFreeway.com
Virginia
Aloe's Transportation Page, Chesapeake Expressway, Delmarva Highways, Driving on Skyline Drive, Virginia, Interstate 83 Extension, Novaroads.8k.com, Old Dominion Roads, Roads to the Future, Smart Tag, Takoma Park Highway Design Studio
Washington
BetterBridge.org, Highways in Washington State, Highways of Washington State, Northwest Highways, Seattle Area Transportation, Washington State Department of Transportation, Washington State Highways, Washington State Highways
Washington, DC
495sucks.com, District Department of Transportation, District of Columbia Highway(s), Roads to the Future, Takoma Park Highway Design Studio
West Virginia
Coalfields Expressway, H.B.'s West Virginia Highways Page, Mountain State Road Photos, Roads to the Future, Route 9, West Run Expressway, West Virginia Corridor H, West Virginia Department of Highways, West Virginia Parkways Authority
Wisconsin
Jody Aho's Northern Minnesota, Northern Wisco, Wisconsin Cruise, Wisconsin Department of Transportation, Wisconsin Highways, Wisconsin State Highways
1999 Road to Ruin Report
Written by Friends of the Earth and Taxpayers for Common Sense, this lists what they think are the 50 most wasteful road projects in America.
3-digit Interstate Highways
Location, history, and trivia. Includes ones that were proposed but never built.
3dis that Aren't--State Route Spurs and Loops
Information about state routes that could be an interstate of the same number.
American Association of State Highway and Transpor
Much information on this consortium.
American Highway Users Alliance
Interest group representing motor vehicle users and businesses promoting highway safety and efficiency. Site includes news updates and Rules of the Road publication information.
American Society of Highway Engineers
Newsletters, FAQ, and other features relevant to the trade.
Appalachian Regional Commission Development Corrid
Unofficial site which explains these potential thoroughfares.
Better Roads Magazine
Periodical covering new technology, products, and maintenance methods.
Bygone Byways
Descriptions of current and former US routes 66, 80, 99, and 101 as well as other notes.
Corporate Sponsor Adopt A Highway Program
Lists the steps which may be taken for Adopt-A-Highway Litter Removal Service of America, Incorporated to manage the section which is requested.
Federal Highway Administration
Much content on many aspects, including an official Interstate route log.
Gorp's Top Ten US Scenic Drives
List which includes details on the Blue Ridge Parkway, Seward Highway, California 1, Vermont 100, and the Custer Scenic Byway.
Heartland Expressway
A proposed divided highway running between Rapid City, South Dakota and Denver, Colorado, also known as High Priority Corridor 14 of the Intermodal Surface Transportation Efficiency Act of 1991. Site includes maps, project status, and various other facts.
High Priority Corridors
Information about these highways which have been set aside as most important in the 1998 bill "Transportation Equity Act for the 21st Century (TEA-21)".
Highway History
Federal Highway Administration page with a collection of articles including those on U.S. Highway numbering and creation of the Interstate system.
Highways.TV
Links to state transportation resources throughout the country including weather, cams, reports, and hotel reservations.
Interstate-Guide.com
Includes the Interstate Guide, the List of Interstate Business Routes, and the Interstate Shield Gallery. Extensive coverage.
Kim Russell's U.S. Highways Page
Gives brief descriptions of all U.S.-numbered routes, past and present, as well as suggestions for possible future routings.
Larry's Phat Page - Highways
Route logs of and personal travel comments about various highways, primarily Interstates.
Michelle Skinner's Interstate Page
Gives descriptions of each route.
Midwestroads.com
Covers the respective region of the country. Includes historic maps, planning documents and reports, and photos.
MotorcycleRoads.US
Compilation of lists specifically for motorcyclists who prefer scenic or winding routes.
National Cooperative Highway Research Program - Pr
Listings for this division of the Transportation Research Board, a unit of the National Research Council.
New England Turnpikes
Information, exit lists, and photos of the modern-day turnpikes.
On the Road
Reports of a 2003 trip along the length of US 1 by two correspondents of Wired News.
Road Stuff
Much Northeast coverage. Also includes photos, map scans, and a log of Route 9's in the country.
Road trip reports
Details from various excursions between Illinois and the East Coast, including photographs.
Route 40 - National Road
Guide to the first federally-funded road in the U.S. (1800s) and the route which followed it later (US 40).
ScenicDrivesOnline.com
Listings which include scenery descriptions, road conditions, and points of interest.
Southern Highroads Trail
A designated scenic highway going through Georgia, Tennessee, North Carolina and South Carolina. Official tourism site.
Southern Highways
Various scenes from along the southern tier of the country.
The Interstate Archive
Gives information with city maps and longitude and latitude information.
The Road Information Program
Nonprofit organization promoting policies which are designed to improve traffic conditions.
The ZZYZX Interstate Highway List
Gives an overview of the system and provides a listing of all one- and two-digit routes.
Tim's Highway Page
Gives text descriptions and locator maps for various routes, primarily in Washington State.
Traffic Counts
List of Average Daily Traffic (ADT) tallies for major metropolitan areas.
U.S. Hwy. 90 - The Southern Route 66
Travelogue and old postcard scans. Page linked is Louisiana but there are also pages on Texas, Mississippi, Alabama, and Florida.
U.S. Route 6 Tourist Association
Covers the entirety of the route. Page includes background, news articles, and maps.
United States Code Title 23 - Highways
Complete contents of the document.
US Highways: From US 1 to US 830
Complete list including historic, plus other features.
US Road Conditions.com
Gives links to each state's respective webpages.