List of future Interstate Highways
Dwight D. Eisenhower National System of Interstate and Defense Highways | |
---|---|
System information | |
Formed | June 29, 1956[1] |
Highway names | |
Interstates | Interstate X (I-X) |
System links | |
In the United States, future Interstate Highways include proposals to establish new mainline (one- and two-digit) routes to the Interstate Highway System. Included in this article are auxiliary Interstate Highways (designated by three-digit numbers) in varying stages of planning and construction, and the planned expansion of existing primary Interstate Highways.
Congressionally designated future Interstates
[edit]Several Congressional High Priority Corridors have been designated as future parts of the Interstate Highway System by the Intermodal Surface Transportation Efficiency Act and amendments. By law, they will become interstates when built to Interstate standards and connected to other interstates.[2][3]
Interstate 3
[edit]Location | Savannah, GA – Knoxville, TN |
---|
Interstate 3 is the proposed designation of an Interstate Highway Corridor under development in the Southeastern United States. It is planned to run from Savannah, Georgia, to Knoxville, Tennessee. Its number does not follow standard numbering conventions; under established numbering conventions, I-3 would normally run west of I-5 along the Pacific Coast. The unnumbered Interstate was established by the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) legislation that also provided for Interstate 14. The "Interstate 3" designation has not been officially accepted by American Association of State Highway and Transportation Officials (AASHTO) or the Federal Highway Administration (FHWA), but is being used by the Georgia Department of Transportation and others to identify the highway. The number comes from the 3rd Infantry Division, which is based in Georgia. The exact route has not been finalized.[4][5]
Interstate 7 or 9
[edit]Location | Wheeler Ridge–Sacramento, CA |
---|
Interstate 7 or 9 has been proposed by Caltrans for State Route 99 in central California. It would go from the split with I-5 at Wheeler Ridge (Wheeler Ridge Interchange) north through Bakersfield and Fresno to Stockton, where the proposed route(s) turns west via the SR 4 freeway to a terminus at I-5 in the central part of that city. An alternate proposed terminus is located at the I-5/US 50/Capital City Freeway junction in Sacramento, where the future Interstate(s), after continuing north from Stockton along Route 99, can turn west along the Capital City Freeway, already an Interstate route (unsigned I-305), to connect with I-5, which extends north toward Redding. This also serves as a connector to the existing northern portion of Highway 99. The future Interstate's prospects for development to appropriate standards are tied to the Caltrans "Route 99 Corridor Enhancement Master Plan"; this document posits that when and if Interstate status is conferred, the route will be designated I-7 or I-9.[6] The route is to remain roughly parallel to I-5, serving major cities in California I-5 does not, including Fresno and Bakersfield.
In August 2005, with the passage of that year's SAFETEA-LU federal transportation legislation, SR 99 from Wheeler Ridge to Stockton and beyond to Sacramento was designated as High Priority Corridor 54, the California Farm-to-Market Corridor; this legislation also designated that corridor as a future segment of the Interstate System.[7]
Interstate 42 (Oklahoma–Arkansas)
[edit]Location | Noble County, Oklahoma to Springdale, Arkansas |
---|---|
Length | 190 mi (310 km) |
On May 20, 2021, Senator Jim Inhofe, of Oklahoma, introduced legislation to designate the portion of US 412 between I-35 in Noble County and I-49 in Springdale, Arkansas as future Interstate 42 (I-42).[8][9] The bill, titled the "Future Interstate in Oklahoma and Arkansas Act" (S. 1766), was cosponsored by senators John Boozman and Tom Cotton, both of Arkansas. The senators' stated reasons for seeking an Interstate designation along US 412 included encouraging economic development, expanding opportunities for employment in the region, making travel safer and shipping easier, attracting new businesses, and better connecting rural and urban communities. Other supporters of the measure include Mayor G. T. Bynum of Tulsa, and the heads of both ODOT and the Arkansas Department of Transportation (ArDOT).[10] The language of the bill was later included in the Infrastructure Investment and Jobs Act (H.R. 3684). Interstate 42 (I-42) was the proposed designation but was withdrawn.[11] ArDOT and ODOT later resubmitted the application to the Spring 2024 meeting; AASHTO approved the route as Interstate 42, conditional on it being upgraded to Interstate standards.[12]
Interstate 67
[edit]Location |
---|
Interstate 67 has been a proposed number for at least three highways.
Indiana has proposed using the I-67 designation for the freeway upgrade of US 31 currently under construction between Indianapolis and South Bend, possibly continuing northward via the US 31 freeway to Benton Harbor, Michigan, and going northward from there along existing I-196 to Grand Rapids. The Indiana Senate unanimously passed a resolution calling for federal funding for this proposal and the I-67 designation in 2003.[13] Meanwhile, Indiana expedited the upgrading of three major sections on US 31 between Indianapolis and South Bend including the Kokomo Bypass. This was done using funds received through the 2006 Major Moves deal. Such a proposal would put I-67 in the proper place in the grid (it is the only number available for that route).
I-67 was originally the designation given to a never-built highway connecting Kalamazoo, Michigan, to the east side of Elkhart, Indiana, as part of the original Interstate numbering plan in 1957.[14] A planning map shows a freeway along this routing intersecting the Indiana Toll Road just west of the State Road 19 interchange.[15] The Michigan State Highway Department officially requested switching the I-67 designation to a route from Benton Harbor to Grand Rapids in 1958, and in the process proposed the northerly extension of the original I-69 from the I-80/I-90/Indiana Toll Road to Lansing.[16] The I-67 designation was denied by the American Association of State Highway and Transportation Officials which then assigned I-196 to the Benton Harbor to Grand Rapids route, west of the I-96 junction near Grand Rapids.[17]
A third, much shorter, proposal in 2011 by the I-67 Development Corporation from the Owensboro, Kentucky, area involves continuing the proposed I-67 in Indiana along a route parallel to US 231 from Crane, Indiana, to Bowling Green, Kentucky. Much of the proposed route already exists and is close to Interstate grade. Only the northern third from Dale, Indiana, to Crane remains unfinished. It would use the Natcher Bridge to cross the Ohio River, Kentucky's I-165 and Indiana's Lincoln Parkway, an expressway facility that would need to be fully upgraded to Interstate standards. It would go around the cities of Jasper and Huntingburg in Indiana as well as Owensboro, Hartford, and Morgantown, Kentucky, and end at Bowling Green. It could also be linked to the first proposal by overlapping I-67 with the currently under construction I-69 from Indianapolis to Crane.[18]
Interstate 92
[edit]This section needs additional citations for verification. (May 2022) |
Location |
---|
As originally proposed by the Michigan State Highway Department in 1957, I-94 from Benton Harbor to Detroit would have been numbered Interstate 92. Since then, I-92 has been a proposed number for at least two highways.
Low population and natural barriers like the White Mountains have impeded economic development in northern New England. In the early 1970s, Maine, New Hampshire, Vermont and New York proposed two new Interstate Highway corridors:
- From Albany, New York, to Portsmouth, New Hampshire, incorporating the current route whose easternmost segment is New Hampshire Route 101.[citation needed]
- From Glens Falls, New York, to Calais, Maine (designated as I-92 and potentially linking to New Brunswick Route 1 near Calais, Maine), tracing U.S. Route 4 eastward through Vermont and New Hampshire.[citation needed]
The Federal Highway Administration ultimately did not approve these plans.
Northern New England is served by three north–south freeways radiating from Boston and by Interstate 91, which follows the Connecticut River. However, the northernmost complete east–west freeway in the region, Interstate 90 in Massachusetts, does not enter northern New England. East–west travel through northern New England is facilitated by three freeway segments:
- Interstate 89 between Montpelier, Vermont, and Burlington.
- US 4 west of Rutland, Vermont.
- New Hampshire Route 101 from Manchester, New Hampshire, eastward to the ocean.
Maine Senator Olympia Snowe said in 2004 that the region is disadvantaged by the fact that it was the only region in the US for which a federal High Priority Corridor was not designated in the 1991 Intermodal Surface Transportation Efficiency Act (ISTEA).[19] In 2012, the east–west highway was again proposed, this time as a privately financed toll road.[20]
Current backers of the highway propose an east–west axis through northern and central Maine, with three potential freeway links with Canada—two from Québec, and one from New Brunswick. One portion of the new highway would run from Interstate 395 in Brewer, Maine, to the Canadian border near Calais, with a direct link to New Brunswick Route 1, a major transportation corridor serving the Maritimes. A second would travel northwest from Interstate 95 near Waterville, Maine, to the Canadian border at Coburn Gore, with a connection to a proposed extension of Quebec Autoroute 10 toward Montreal. A third would travel due west from I-95 near Waterville, following the U.S. Route 2 corridor through Maine, New Hampshire, Vermont, and northern New York, with Quebec's Autoroute 73 having a southeasterly oriented southern end that heads for the Armstrong-Jackman Border Crossing, as Quebec Route 173 already reaches the United States at the same port of entry.[citation needed]
Interstate 98
[edit]Location | Watertown, NY – Swanton, VT |
---|
As originally proposed by the Michigan State Highway Department in 1958, I-696 would have been numbered Interstate 98.[16] Since then, another highway in Upstate New York and Vermont has been linked to the number. Plans for the Rooftop Highway, a proposed limited-access highway that would extend for 175 miles (282 km) from Watertown, New York, to Swanton, Vermont, which I-89 travels through (at exit 21), first surfaced in the 1950s. If built, the highway would likely follow the US 11 corridor across the northern part of New York's North Country, connecting I-81 to I-89.[citation needed]
A study called the North Country Transportation Study Action Plan and Final Technical Report suggests that the road would likely be built to Interstate Highway standards due to a lack of infrastructure throughout the area. Backers of the project have called for the highway to be designated as I-98;[21] however, this designation has not been recognized by any government agencies, such as NYSDOT or the AASHTO. The number does fit into AASHTO's numbering system, though, as the highest even numbers are designated for highways running along the Canadian border, such as the proposed highway.[22]
The Northern Corridor Transportation Group (NCTG) was formed in December 2008 as a means of refocusing the fifty-year discussion on the project. Since that time, more than 100 municipal and civic resolutions from the five northern counties of New York have been passed in support of the construction of the project. On July 16, 2009, the NCTG submitted a request to U.S. Senator Kirsten Gillibrand to direct $800 million toward the project as part of the reauthorization of a federal highway transportation bill. In a historic move, the six northern legislators representing the North Country in the New York State Legislature (Senators Aubertine, Griffo and Little and Assembly Members Scozzafava, Russell and Duprey) signed an official letter of request to the same end.[citation needed]
Interstate 99
[edit]
Location | Wilson, NC–Christiana, DE |
---|
In 2006, the Virginia General Assembly directed the Secretary of Transportation to initiate a study to determine the interest of affected states in the construction of a new Interstate highway (I-99).[23][24][25] I-99 would allow long-distance travelers to bypass the I-95 bottleneck in the Baltimore–Washington metropolitan area. This would be separate from the existing Interstate 99 in New York and Pennsylvania, and unlike the current route, would fall into its place on the numbering grid.
I-99 would travel from I-95 in Wilson, North Carolina, to another point on I-95 in Christiana, Delaware (12 miles (19 km) from Wilmington, Delaware). It would renumber the controlled access Delaware Route 1 and would parallel (or utilize an upgraded version of) U.S. Route 13 (US 13) through the Delmarva Peninsula and use the existing Chesapeake Bay Bridge–Tunnel. It would travel through Norfolk, Virginia, traveling concurrently with existing interstates where possible. I-99 would continue to travel parallel to US 13 until it enters North Carolina (which is itself in the process of being upgraded to an Interstate), where it would travel parallel to US 258 until ending on I-95 in Wilson.[24]
Another option is for I-99 to parallel (or utilize upgraded versions of) US 17 in North Carolina, and have it end in Charleston, South Carolina (or Pocotaligo, South Carolina where it could rejoin I-95). Much of US 17 is a four-lane divided highway, but only short sections are currently freeway standard. One option that was never fully planned was to connect the proposed Christiana, Delaware, I-99 east coast section and the existing Bedford, Pennsylvania, I-99 section by having I-99 travel concurrently with existing interstates including I-476 and I-76.[24]
Future Auxiliary Interstate Highways
[edit]Interstate 169 (Tennessee)
[edit]Location | Union City to Martin |
---|---|
Length | 15.00 mi (24.14 km) |
Interstate 169 is proposed to run along Tennessee State Route 22 from Union City to Martin.[26]
Interstate 195 (Washington D.C.)
[edit]Future Interstate 195 | |
---|---|
Location | south of District of Columbia |
This section is empty. You can help by adding to it. (January 2025) |
Interstate 214
[edit]Future Interstate 214 | |
---|---|
Location | Bryan–College Station |
This interstate is proposed to be a beltway around Bryan-College Station in Texas.[27]
Interstate 222
[edit]Location | Graysville to Brookside |
---|---|
Length | 2.26 mi (3.64 km) |
Interstate 222 (I-222) is a future auxiliary Interstate Highway that will be a connector between I-22 and the proposed I-422 near Birmingham, Alabama. There will be no exits other than its termini. The highway has been proposed because an interchange directly between I-22 and I-422 cannot be built due to environmental issues.[28]
Interstate 274 (North Carolina)
[edit]Location | Winston-Salem |
---|---|
Length | 16.83 mi (27.09 km) |
Interstate 274 (I-274) is the future designation for the western half of the beltway, currently designated as NC 452. When completed, it will connect US 158, near Clemmons, North Carolina, to Future I-74/Future I-285/US 52, in Bethania. I-274 first appeared on North Carolina Department of Transportation (NCDOT) planning maps in the early 2000s but was later disused for over a decade since. On May 20, 2019, the American Association of State Highway and Transportation Officials (AASHTO) approved a request to establish Future I-274. Justification given by NCDOT was that the 16.83-mile (27.09 km) section would satisfy a great need to alleviate congestion in Winston-Salem and connect the western portion of the urbanized area.[29]
Interstate 310 (Mississippi)
[edit]Location | Gulfport |
---|---|
Length | 6.00 mi (9.66 km) |
Interstate 310 is a proposed Interstate in Mississippi. Construction was supposed to begin in 2008 but never occurred. Much of the land clearing was done.[30]
Interstate 365
[edit]Location | Park City to Somerset |
---|---|
Length | 88.376 mi (142.227 km) |
Interstate 365 is a proposed redesignation of the Cumberland Parkway once it is upgraded to Interstate standards. On August 5, 2021, Congress released a new infrastructure bill that proposed to designate the whole length of the Cumberland Expressway as a Future Interstate, with the designation of I-365.[31] The designation would need approval from AASHTO, the FHWA, and upgrades of several interchanges and other improvements before the designation could be implemented.
Interstate 369 (Kentucky)
[edit]Location | Henderson to Owensboro |
---|---|
Length | 24.441 mi (39.334 km) |
Interstate 369 is planned to follow the entire Audubon Parkway with the Western terminus to Interstate 69 being called Interstate 69 Spur.[32]
Interstate 380 (Ohio)
[edit]Location | Akron to Macedonia |
---|---|
Length | 17.57 mi (28.28 km) |
This interstate is proposed to start from the southern terminus of Ohio SR 8 at Akron to the intersection of I-271. The project hasn't been approved yet.[33]
Interstate 422
[edit]Location | south of Bessemer to Argo |
---|---|
Length | 52.5 mi (84.5 km) |
Interstate 422 is a proposed beltway in Birmingham. Interstate 422 won't directly connect to I-22 so therefore a new connector known as Interstate 222 is proposed. It is also called Corridor X-1. A timeline for construction to begin has not been established.[34]
Interstate 490 (Illinois)
[edit]Location | Franklin Park to Des Plaines |
---|---|
Length | 6.00 mi (9.66 km) |
Existed | 2025–present |
Interstate 490 (I-490), also known as the O'Hare West Bypass and Western O'Hare Beltway, is a six-mile (9.7 km) electronic toll highway and a beltway that is currently under construction near Chicago, Illinois; it will run along the west side of O'Hare International Airport. The tollway will connect I-294 (Tri-State Tollway) to a western access point to the airport. From there, it will continue northward to an extension of Illinois Route 390 (IL 390, formerly known as the Elgin-O'Hare Expressway) and I-90 (Jane Addams Memorial Tollway). It is proposed to be finished by 2025.[35]
Interstate 569
[edit]Location | Nortonville to Beaver Dam |
---|---|
Length | 38.446 mi (61.873 km) |
In April 2019, the Western Kentucky Parkway was originally proposed as Interstate 369 before being changed Interstate 569 in December 2019 as the Audubon Parkway was proposed to be Interstate 369.[36]
Interstate 685 (Alabama)
[edit]Location | Montgomery |
---|---|
Length | 14.440 mi (23.239 km) |
This Interstate is planned to follow a portion of Interstate 95 when Interstate 95 gets altered on the Montgomery Outer Loop.
Interstate 685 (North Carolina)
[edit]Location | Greensboro to Dunn |
---|---|
Length | 89.200 mi (143.553 km) |
Interstate 685 is a proposed Interstate planned to run along current US 421. It will be upgraded to Interstate highway standards from Interstate 40 in Greensboro to Interstate 95 in Dunn.[37]
Interstate 795 (Florida)
[edit]Location | St. Johns to Jacksonville |
---|---|
Length | 5.508 mi (8.864 km) |
Florida State Road 9B is planned to be redesignated Interstate 795 (I-795) when the designation is approved by the Federal Highway Administration (FHWA) and the American Association of State Highway and Transportation Officials (AASHTO).[38]
Interstate 905
[edit]Location | San Diego to Otay Mesa |
---|---|
Length | 8.96 mi (14.42 km) |
Interstate 905 in California is proposed to replace California State Route 905, which connects San Diego to the Mexican border.[39]
See also
[edit]References
[edit]- ^ Weingroff, Richard F. (Summer 1996). "Federal-Aid Highway Act of 1956, Creating the Interstate System". Public Roads. 60 (1). Washington, DC: Federal Highway Administration. Retrieved March 16, 2012.
- ^ United States Congress. "National Highway System Designation Act of 1995". Library of Congress. Archived from the original on September 4, 2015. Retrieved October 21, 2007.
- ^ Staff (May 2, 2006). "Future Interstates on the National Highway System Designated by Section 1105 of ISTEA as amended". Federal Highway Administration. Archived from the original on September 26, 2006.
- ^ "Table of Contents - Report To Congress - 3rd Infantry Highway - Section 1927 - Planning - FHWA". web.archive.org. December 21, 2024. Retrieved January 24, 2025.
- ^ "Appendix A: Preliminary Corridors - Design Levels - 3rd Infantry Highway - Section 1927 - Planning - FHWA". web.archive.org. February 6, 2024. Retrieved January 24, 2025.
- ^ "Chapter 3". Caltrans Route 99 Enhancement Plan (PDF). California Department of Transportation. Archived from the original (PDF) on February 4, 2010.
Interstate designation, under the current proposal, would apply to the 260-mile (420 km) segment between the junction of State Route 99 with I-5 south of Bakersfield to I-5 in Stockton using State Route 4 as the connector to I-5. Since there is an I-99 route currently in existence in Pennsylvania, it is anticipated that should designation be granted, the Route 99 designation would become I-7 or 9 to satisfy Interstate numbering convention.
- ^ United States Congress. "Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users". Library of Congress.
- ^ "Residents get clarity on plans for U.S. 412". Arkansas Democrat Gazette. June 14, 2024. Retrieved June 27, 2024.
- ^ "Siloam Springs residents speak out about interstate proposal". 40/29 News Sunrise. June 13, 2024. Retrieved June 27, 2024.
- ^ Della Rosa, Jeff (May 21, 2021). "U.S. legislators look to designate part of Highway 412 as 'future interstate'". Talk Business & Politics. Retrieved May 22, 2021.
- ^ "Final_Report_USRN_Fall_2023_R_1.pdf" (PDF). Retrieved July 4, 2024.
- ^ Special Committee on U.S. Route Numbering (2024). "2024 Spring Meeting Report to the Council on Highways and Streets" (Report). Washington, DC: American Association of State Highway and Transportation Officials. Retrieved June 2, 2024 – via AASHTO Route Numbering Archive.
- ^ "Zakas' Resolution Passes Senate Unanimously; Bill supports efforts of Indiana Congressional Delegation to seek federal funding for US 31 freeway project" (Press release). State of Indiana Senate District 11. Archived from the original on March 11, 2007. Retrieved July 6, 2009.
- ^ Public Roads Administration (August 14, 1957). Official Route Numbering for the National System of Interstate and Defense Highways (Map). American Association of State Highway Officials – via Wikimedia Commons.
- ^ "FAI9 1957". Indiana Interstates: 1957 Interstate Highway System. Archived from the original on June 23, 2002. Retrieved May 7, 2008.
- ^ a b Staff (April 25, 1958). Recommended Interstate Route Numbering for Michigan (Report). Michigan State Highway Department. Archived from the original on August 5, 2004. Retrieved September 4, 2010.
- ^ "Would Shift Route Number: Mackie Seeks Int. 96 Designation for Grand Rapids–Muskegon Stretch". The Grand Rapids Press. May 1, 1963. p. 31. OCLC 9975013.
- ^ GO-EDC (January 13, 2012). "Facts about Interstate 67 as Owensboro's interstate". Owensboro Economic Development Blog. Greater Owensboro Economic Development Corporation. Retrieved October 10, 2012.
- ^ Senator (June 25, 2004). "East–West Highway Will Connect Mainers to All Points In-Between and Beyond". Weekly Senate Update. Archived from the original on July 1, 2011.
- ^ "Transportation Committee passes bill for east-west highway study". Bangor Daily News. Retrieved February 18, 2012.
- ^ "It's now I-98, not Rooftop Highway". Adirondack Daily Enterprise. Saranac Lake, NY. August 1, 2009. Retrieved February 2, 2011.
- ^ "Is there any rhyme or reason to how U.S. interstate highways are numbered?". HowStuffWorks. June 12, 2001. Retrieved January 23, 2019.
- ^ Froggie; Mapmikey (May 2, 2010). "I-99". The Virginia Highways Project.[self-published source]
- ^ a b c Homer, Piere R. (November 2006). Construction of I-99: Report to the Chairmen of House Committees on Transportation and Appropriations and Senate Committees on Transportation and Finance (PDF). Richmond: Virginia Department of Transportation. Retrieved August 31, 2018.
- ^ Virginia Department of Transportation (January 2008). Interstate Compact: Report to the Division of Legislative Automated Systems (PDF). Richmond: Virginia Department of Transportation. Retrieved August 31, 2018.
- ^ "Tennessee General Assembly". capitol.tn.gov. Retrieved January 23, 2025.
- ^ "Statutory Listing of Corridor Descriptions - High Priority Corridors - National Highway System - Planning - FHWA". fhwa.dot.gov. Archived from the original on December 30, 2024. Retrieved January 23, 2025.
- ^ "Wayback Machine" (PDF). sp.route.transportation.org. Archived from the original (PDF) on November 6, 2021. Retrieved January 24, 2025.
- ^ "NCDOT: Project Details". October 29, 2011. Retrieved January 23, 2025.
- ^ "Statutory Listing of Corridor Descriptions - High Priority Corridors - National Highway System - Planning - FHWA". www.fhwa.dot.gov. Retrieved January 24, 2025.
- ^ CNN (August 2, 2021). "READ: Bipartisan infrastructure bill | CNN Politics". CNN. Retrieved January 24, 2025.
{{cite web}}
:|last=
has generic name (help) - ^ "Congressman Comer and Senator McConnell Introduce Legislation to Designate I-69 Spur in Muhlenberg and Ohio Counties | Congressman James Comer". web.archive.org. April 4, 2019. Retrieved January 24, 2025.
- ^ Schleis, Paula. "Planning agency AMATS says it's time for state Route 8 to be designated as interstate". www.ohio.com. Archived from the original on January 22, 2016. Retrieved January 24, 2025.
- ^ Blakely, Will (August 24, 2023). "U.S. Rep. Palmer: Northern Beltline 'critical' for Alabama; Says I-65…". 1819 News. Retrieved July 1, 2024.
- ^ "Illinois Tollway". illinoistollway.com. Retrieved January 23, 2025.
- ^ Goffinet, Jared; Holbrook, Tanner (January 2, 2020). "Proposed bill to make W. KY. Pkwy. I-69 spur passes". 14news.com. Retrieved January 24, 2025.
- ^ Hammer, John (September 26, 2019). "Gate City Headed For Another Interstate Highway". The Rhino Times of Greensboro. Retrieved January 23, 2025.
- ^ "State Road 9B Opens In St. Johns County; It Will Eventually Be Renamed I-795". WJCT News 89.9. August 9, 2018. Retrieved January 23, 2025.
- ^ "FHWA Route Log and Finder List - Interstate Highway System - National Highway System - Planning - FHWA". www.fhwa.dot.gov. Retrieved January 24, 2025.