List of future Interstate Highways

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Dwight D. Eisenhower National System of Interstate and Defense Highways

Future Interstate 3 marker

Future Interstate 42 marker

Shields for future Interstates
Proposed Interstate Highways in December 2015
System information
FormedJune 29, 1956[1]
Highway names
InterstatesInterstate 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. Excluded from 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]

Main article: Interstate 3

Future Interstate 3 marker

Future Interstate 3

LocationSavannah, 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.[citation needed]

Interstate 7 or 9[edit]

Main article: California State Route 99

Future Interstate 7 or
Future Interstate 9

LocationWheeler Ridge–Sacramento, CA

Interstate 7 or Interstate 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 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, 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 either I-7 or I-9.[4]

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.[5]

Interstate 42[edit]

Main article: U.S. Route 70 in North Carolina

Future Interstate 42 marker

Future Interstate 42

LocationGarner–Morehead City, NC
Length142 mi (229 km)

The Fixing America's Surface Transportation Act (FAST Act) added the US 70 corridor between Garner and Morehead City, North Carolina, to the Interstate system by defining it as, first, High Priority Corridor #82 and subsequently designating it as a future Interstate.[6] The Regional Transportation Alliance expected this corridor to be called I-46 or another suitable designation.[7] At a meeting in La Grange, North Carolina, on March 17, 2016, the Super 70 Corridor Commission recommended that the designation of I-50 be sought for the US 70 Interstate corridor. The rationale for the I-50 numerical selection was cited as a number not in conflict with either an existing Interstate designation or currently applied to a U.S. Highway within North Carolina.[8] This recommendation was forwarded to NCDOT for submission to AASHTO.

For the AASHTO Special Committee on U.S. Route Numbering meeting in May 2016, NCDOT proposed I-36 for this route.[9] However, AASHTO instead designated the route as I-42.[10][11]

In March 2022, the Federal Highway Administration designated the 10-mile (16 km) Clayton Bypass and the 22-mile (35 km) Goldsboro Bypass, which have been built to Interstate Highway standards, formally as I-42 and NCDOT announced that the interstate would be signed by the end of the year.[12] This, however, was delayed due to several projects on I-40 and the need for NCDOT to remove the North Carolina Highway 42 (NC 42) designation in Clayton to avoid confusion between that route and I-42. NCDOT plans to redesignate the Clayton portion of NC 42 to NC 36 with I-42 being signed within a year after the redesignation.[13]

See also[edit]

  • Interstate 11, a short Interstate Highway in Clark County, Nevada that is planned from Nogales, Arizona to the vicinity of Reno, Nevada.
  • Interstate 66 (Kansas–Kentucky), proposed but later canceled
  • Interstate 69, a partially constructed Interstate Highway consisting of 10 unconnected segments, plus an original continuous segment from Indianapolis to the Canadian border in Port Huron, Michigan. Plans include building a continuous Interstate Highway from the Mexican border in Brownsville, Texas to the Canadian border in Port Huron, Michigan.
  • Interstate 73, an Interstate located entirely in North Carolina but with plans to run from Myrtle Beach, South Carolina, to northern Michigan
  • Interstate 99, a partially completed Interstate with 2 sections, one in southern New York and another in Central Pennsylvania. The current plan is for the segments to be connected by running concurrent with I-80, US 220, and US 15. Not to be confused with the I-99 mentioned in section above.

References[edit]

  1. ^ 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.
  2. ^ 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.
  3. ^ 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.
  4. ^ "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 I-9 to satisfy Interstate numbering convention.
  5. ^ United States Congress. "Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users". Library of Congress.
  6. ^ "An Act To authorize funds for Federal-aid highways, highway safety programs, and transit programs, and for other purposes" (PDF). Congress.gov. January 6, 2015.
  7. ^ "A victory ten years in the making". RTA. Archived from the original on April 4, 2016. Retrieved February 29, 2016.
  8. ^ Wilson, Marcia R. (March 17, 2016). "Minutes and Summary" (PDF). La Grange, NC: Highway 70 Corridor Commission of North Carolina. Archived from the original (PDF) on June 23, 2016. Retrieved April 7, 2016.
  9. ^ "AASHTO Electronic Balloting System, View Ballot, Agenda and List of Applications, SM-2016" (PDF). AASHTO. Archived from the original (PDF) on June 10, 2016. Retrieved May 5, 2016.
  10. ^ Special Committee on U.S. Route Numbering (May 24, 2016). "Special Committee on U.S. Route Numbering" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Archived from the original (PDF) on December 16, 2017. Retrieved May 26, 2016.
  11. ^ Siceloff, Bruce (May 25, 2016). "Future interstate highway names approved". News & Observer. Retrieved May 25, 2016.
  12. ^ Stradling, Richard (March 19, 2022). "Two sections of U.S. 70 in Eastern North Carolina join the interstate highway system". News & Observer.
  13. ^ Stradling, Richard (July 21, 2023). "Will '40/42' be a thing of the past? NCDOT plans to rename NC 42 in Johnston County". The News & Observer. Raleigh, NC. Retrieved July 21, 2023.

External links[edit]

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