Future Interstate Highways

Dwight D. Eisenhower National System of Interstate and Defense Highways

Interstate 14 marker Interstate 101 marker

Shields for future Interstates

Interstate Highways in the 48 contiguous states
System information
Formed: June 29, 1956[1]
Highway names
Interstates: Interstate X (I-X)
System links

Future Interstate Highways include various proposals to expand the Interstate Highway System in the United States. This does not include the numerous auxiliary Interstate Highways that are in various stages of planning and construction.

Congressionally designated future Interstates

Several Congressional High Priority Corridors have been designated as future parts of the Interstate 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 7 or 9

Interstate 7 or 9
Location: Wheeler Ridge – Stockton, 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 Fresno to Stockton, where the proposed route turns west via the State Route 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 the city of 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", which outlines improvements to that route, including capacity and physical improvements; this document posits that when and if Interstate status is conferred, the route will be designated 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 11

Interstate 11
Location: Tucson, AZ – Las Vegas, NV or Reno, NV
Main article: Interstate 11

Interstate 11 is the congressionally designated route number for an Interstate connecting Phoenix, Arizona, to Las Vegas or Reno, Nevada.

The concept of an Interstate highway connecting Phoenix and Las Vegas was first explored in the contractor-trade publication "Roads and Bridges" in June 1997; the article outlining the I-11 route and rationale was titled "Interstate 2000: Improvement for the Next Millennium", written by Wendell Cox and Jean Love. Their rationale was that the Phoenix and Las Vegas metro areas were two of the largest (and, circa 1997, growing) urban regions in adjacent states not featuring direct Interstate connection. The corridor would be approximately 285 miles (459 km) in length and would most likely subsume the existing I-515 freeway facility in the Las Vegas area.[6] Plans to connect I-11 to the existing Interstate network in the Phoenix region have yet to be determined, but the most likely routing would extend west and southwest of the Phoenix metro complex via the proposed "Hassayampa" corridor. The proposed routing for I-11 is part of the Canamex high-priority corridor.[7] The projects contained within this portion of the overall Canamex corridor include the recently completed Hoover Dam Bypass project.[8][9][10][11]

There are no official plans to upgrade the highway to full freeway status between these cities, although the US 93 corridor is being presently upgraded to divided expressway status; along with a planned freeway bypass of the town of Wickenburg at the junction of US 60 and US 93.[12][13] Extensions into the Tucson area where the road will meet with Interstate 19 are already in planning.[14]

In July 2009, the Regional Transportation Commission of Southern Nevada passed a resolution, coinciding with recent resolutions from the City of Las Vegas, and several Arizona transportation agencies, to support a future I-11. The Boulder City bypass on US 93 will be built to Interstate standards and is currently in the planning stages.[15][16] Presently the text of the 2012 two-year highway reauthorization bill as passed by the Senate (S. 1813) includes a section that authorizes the sections of High Priority Corridor 26, the "Canamex" corridor, between Phoenix and Las Vegas as a future Interstate and further specifies the designation of I-11 to that routing.[17]

The language of the two-year transportation bill as passed by both House and Senate as of June 28, 2012, retained the addition of the Canamex corridor as Future Interstate 11, including its actual numerical designation; this will write I-11 into law with the expected signature of the President.[18] In March 2014, interim/future I-11 signage was applied along the nascent corridor in locations such as the O'Callaghan-Tillman Bridge (adjacent to Hoover Dam) and its approaches, and a brief segment of US 93 north of Kingman, AZ, at the Arizona State Route 68 junction; these are the only portions of the corridor, aside from extant I-515, presently meeting Interstate standards.[19][20][21]

The Fixing America's Surface Transportation Act (FAST Act), signed by President Obama on December 14, 2015,[22] officially designated the Intermountain West Corridor, generally along US 95 from Las Vegas to Interstate 80, as a future Interstate highway, designating it as I-11. At the same time, it extended the southern terminus of the corridor from Phoenix through Tucson to Nogales generally via the I-10 and I-19 corridors.[23]

Interstate 14

Interstate 14
Location: Fort Stockton, TX – Texas-Louisiana Border near Burkeville, TX
Main article: Interstate 14

The 14th Amendment Highway was proposed in the 2005 highway funding bill (Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users) to run from Augusta, Georgia, through Macon, Columbus, Montgomery, Meridian, Jackson, to end in Natchez, Mississippi, or Alexandria, Louisiana. It is named for the 14th Amendment to the U.S. Constitution. The Federal Highway Administration completed an Interstate feasibility study of the highway although the corridor is not a Congressionally designated Interstate corridor. Because it would run between I-10 and I-20, and I-12 exists in Louisiana and I-16 in Georgia, Interstate 14 is the next logical available number.[24]

The Fixing America's Surface Transportation Act (FAST Act), signed by President Obama on December 14, 2015, officially assigned the Future I-14 designation to the US 190 Central Texas Corridor.[25] The section of US 190 between Killeen and Temple, Texas, is already at Interstate Highway standards, and it will be formally renamed I-14 on April 28, 2016.[26][27]

Interstate 44, 50, 56, or 89

Interstate 44, 50, 56 or 89
Location: Raleigh, NC – Norfolk, VA
Length: 192 mi (309 km)

The North Carolina Department of Transportation (NCDOT) proposed the Interstate 44 (I-44) designation for the Raleigh–Norfolk High Priority Corridor consisting of portions of the present I-495 and U.S. Highway 64, in North Carolina and US 17 in North Carolina and Virginia. The route would connect two of the largest US metro areas lacking an Interstate connection: the Research Triangle area around Raleigh, North Carolina, with the Hampton Roads metro area centered on Norfolk, Virginia. In November 2012, NCDOT requested the addition of the corridor to the Interstate Highway System through administrative options with the Federal Highway Administration as I-44.[28] Congressman G. K. Butterfield introduced legislation in June 2014 to add the corridor to the Interstate Highway System through Congressional authority.[29] An NCDOT policy paper said they were "seeking language in the reauthorization of surface transportation programs legislation to enhance the description of the Raleigh–Norfolk Corridor to include the route via Rocky Mount/Elizabeth City for clarity, and to designate the entire route from Raleigh to Norfolk as a future part of the Interstate system as Interstate 44 or 50."[30][31] This corridor was officially designated as a future Interstate with the passing of the Fixing America's Surface Transportation Act (FAST Act), signed by President Obama on December 14, 2015.[22]

If the I-44 designation is approved, it would be non-contiguous with the present I-44, which runs between Wichita Falls, Texas, and St. Louis, Missouri. However, subsequent review of available and preferred route numbers has produced two other candidates: I-56 if an east–west designation is chosen, or I-89 if a north–south designation is chosen. I-56 is not in use, while I-89 exists in Vermont and New Hampshire but is far removed from this corridor.[32] For the upcoming AASHTO Special Committee on U.S. Route Numbering, NCDOT proposed I-89 for this route.[33]

Interstate 36, 46 or 50

Interstate 36, 46 or 50
Location: Garner, NC – Morehead City, NC
Length: 142 mi (229 km)

The Fixing America's Surface Transportation Act (FAST Act), signed by President Obama on December 14, 2015, added the US 70 corridor between Garner and Morehead City, to the Interstate system by defining it as, first, High Priority Corridor #82, and subsequently designating it as a future Interstate.[22] The Regional Transportation Alliance expects this corridor to be called I-46 or another suitable designation.[34] At 142 miles (229 km) long, this corridor is unlikely to receive a three -digit route number. At a meeting in La Grange on March 17, 2016, the Super 70 Corridor Commission recommended that the designation of Interstate 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.[35] This recommendation will be forwarded to NCDOT for submission to AASHTO.

In the upcoming AASHTO Special Committee on U.S. Route Numbering, NCDOT proposed I-36 for this route.[36]

Others

Proposed routes:

Other proposals

Interstate 3

Interstate 3
Location: Savannah, GA – Knoxville, TN
Main article: Interstate 3

The 3rd Infantry Division Highway was proposed in the 2005 highway funding bill (Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users) to run from Savannah, Georgia, north via Augusta, to Knoxville, Tennessee. The corridor was not a Congressionally designated Interstate Corridor, but local political advocates assumed it would be called Interstate 3, its popular name.[24] This number does not fit into the Interstate Highway numbering system, but matches the name chosen to honor the US Army's Third Infantry Division. The Federal Highway Administration conducted an feasibility study and came to the conclusion that the 3rd Infantry Division Highway was not feasible as an Interstate Highway because of traffic projections and potential environmental impact of the highway crossing through forest in the Appalachian's Smokey Mountains south of Knoxville. The FHWA left the highway's future strictly up to the state highway departments and stopped any future federal studies.

Interstate 61

Interstate 61
Location: Gulfport–Jackson, Mississippi

Interstate 61 is a planned Interstate set to run from Gulfport to Jackson, Mississippi. This highway would follow the route of US Highway 49. The southern end of this highway would be at Interstate 10 close to the Cowan–Lorraine Road exit (exit 38) near the Biloxi–Gulfport line (the northern end is currently unknown). Interstate 61 from Gulfport to Wiggins was expected to be completed in 2011.[42]

Interstate 67

Interstate 67
Location: Indianapolis, IN – Grand Rapids, MI; South Bend, IN –Kalamazoo, MI; Bowling Green, KY – Crane, IN

Interstate 67 (I-67) is 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 in Indiana between Indianapolis and South Bend, and possibly continuing northward via the US 31 freeway north to Benton Harbor, Michigan, and going northward from there along existing I-196. The Indiana Senate unanimously passed a resolution calling for federal funding for this proposal and the I-67 designation in 2003.[43] Meanwhile, Indiana is expediting the upgrade of US-31 between Indianapolis and South Bend 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.[44] A planning map shows a freeway along this routing intersecting the Indiana Toll Road just west of the State Road 19 interchange.[45] 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 current I-69.[46] The I-67 designation was denied by AASHO which then assigned I-196 to the Benton Harbor to Grand Rapids route, west of the I-96 junction near Grand Rapids.[47]

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 Interstate-grade Natcher Parkway 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, Morgantown 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.[48]

Interstate 92

Interstate 92
Location: Albany, NY –
Portsmouth, NH or
Glens Falls, NY – Calais, ME

As originally proposed by the Michigan State Highway department in 1958, I-94 from Benton Harbor to Detroit, MI would have been numbered Interstate 92. Since then, I-92 is 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:

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:

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.[49] In 2012, the east–west highway was again proposed, this time as a privately financed toll road.[50]

Current backers of the highway propose an east–west axis through northern and central Maine. One portion of the new highway would run from Interstate 395 in Brewer, Maine, to the Canada-U.S. 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 Canada-U.S. 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.

Interstate 98

Interstate 98
Location: Watertown, NY–Swanton, VT

As originally proposed by the Michigan State Highway Department in 1958, I-696 would have been numbered I-98.[46] Since then, another highway in Upstate New York & 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 NY to Swanton VT, first surfaced in the 1950s. If built, the highway would likely follow the US 11 corridor across the northern part of North Country, connecting I-81 to I-89. The project is expected to create more than 27,000 jobs throughout the North Country and is expected to take as many as 15 years to complete.

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 in order to improve constrained transit systems due to a lack of infrastructure throughout the area. Backers of the project have called for the highway to be designated as I-98;[51] however, this designation has not been recognized by any government agencies, such as NYSDOT or the American Association of State Highway and Transportation Officials (AASHTO). The number does fit into AASHTO's numbering system, though, as the highest even numbers are designated for highways running along the Canada–United States border, such as the proposed highway.

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.

Interstate 99 or 101

Interstate 99 or 101
Location: Charleston, SC–Wilmington, DE or
Raleigh, NC-Philadelphia, PA

There are two segments of Interstate 99 in central Pennsylvania, and between the Pennsylvania border and Corning, New York.[52] An alternate corridor, designated "Interstate 99" by the Virginia Department of Transportation (VDOT), was under study in Delaware, Maryland, Virginia, North Carolina and South Carolina in the mid-2000s. Such a corridor would follow the U.S. Route 17 (US 17) and US 13 corridors, from Charleston, South Carolina, through the Norfolk–Virginia Beach metro area and across the Chesapeake Bay Bridge-Tunnel complex, up the Delmarva Peninsula to Wilmington, Delaware.[53] If the proposal were to be constructed and approved, it is unclear as to whether it would receive the "I-99" designation.

However, after commissioning a study in 2006, VDOT dismissed the proposal for several reasons. VDOT indicated that expenses in upgrading the Chesapeake Bay tunnels would be about $5 billion. Also cited were the location of new highway alignments, and doubt as to whether other states, particularly South Carolina, would commit to the endeavor.[53] Much of the highway along the corridor would need to be upgraded to Interstate standards, but portions of highway along the corridor have already been upgraded. In the 1990s, Delaware constructed a limited access facility on Delaware Route 1, paralleling US 13 from Dover to Wilmington. Additionally, Delaware has considered upgrading the US 113 corridor south of Dover,[53] though, this deviates from the path suggested by VDOT. In Maryland, a portion of US 13 is routed along a limited-access bypass around Salisbury.

The corridor has also sometimes been described as a potential Interstate 101 along the same coastal corridor, including crossing the Chesapeake Bay Bridge-Tunnel complex. I-101 would run from I-95, near Philadelphia, Pennsylvania, through Norfolk, Virginia to I-85, near Raleigh, North Carolina, instead.[6][54] The Norfolk-to-Raleigh segment of this proposal is moving forward as future Interstate 44, 50, 56, or 89 as described above.

References

  1. ↑ Weingroff, Richard F. (Summer 1996). "Federal-Aid Highway Act of 1956, Creating the Interstate System". Public Roads (Washington, DC: Federal Highway Administration) 60 (1). Retrieved March 16, 2012.
  2. ↑ United States Congress. "National Highway System Designation Act of 1995". Library of Congress.
  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" (PDF). Caltrans Route 99 Enhancement Plan (PDF). California Department of Transportation. 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 either 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. 1 2 Cox, Wendell & Love, Jean (June 1997). "Interstate 2000: Improvement for the Next Millenium". Roads & Bridges. Retrieved December 1, 2013.
  7. ↑ "Proposed Hassayampa Freeway map" (Map). Las Vegas Sun.
  8. ↑ "Hoover Dam Bypass". Central Federal Lands Highway Division and HDR Engineering.
  9. ↑ "US 93 corridor in Arizona". Arizona Department of Transportation. Retrieved June 2, 2013.
  10. ↑ "Quick Status Update and Upcoming Activities: July–August 2009" (PDF) (Press release). Hoover Dam Bypass Project.
  11. ↑ Norman, Jean Reid (August 12, 2009). "Boulder City Council endorses Vegas-to-Phoenix interstate". Las Vegas Sun.
  12. ↑ "High Priority Corridors, Canamex (Corridor 26)". AARoads.com.
  13. ↑ "Western Roads". AARoads.com.
  14. ↑ Rico, Gabriela. "Tucson may see another interstate". Arizona Daily Star.
  15. ↑ "Freeway to Phoenix gains traction with bridge work". Las Vegas Sun. July 11, 2009.
  16. ↑ "Boulder City Bypass". Nevada Department of Transportation.
  17. ↑ "S. 1813 (2012)" (PDF). Library of Congress. Sec. 1104(c)(5)(b)(2). Retrieved May 20, 2012.
  18. ↑ Holstege, Sean (June 28, 2012). "Bill for Phoenix to Vegas freeway advances". Arizona Republic (Phoenix, AZ).
  19. ↑ DeWelles, Angela (March 25, 2014). "New I-11 signs mark congressionally designated corridor". ADOT Blog. Arizona Department of Transportation.
  20. ↑ Velotta, Richard N. (March 21, 2014). "Nevada, Arizona governors unveil I-11 signs on future interstate route". Las Vegas Review-Journal.
  21. ↑ Gabriela Rico (March 24, 2014). "'Future I-11' signs go up north of Phoenix". Arizona Daily Star.
  22. 1 2 3 https://www.congress.gov/114/bills/hr22/BILLS-114hr22enr.pdf#page=111
  23. ↑ Arizona Department of Transportation Media Relations (December 4, 2015). "Interstate 11 Receives Designation in Federal Transportation Funding Bill" (Press release). Arizona Department of Transportation. Retrieved December 7, 2015.
  24. 1 2 "SAFETEA-LU Section 1927". Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users. Federal Highway Administration. March 8, 2011. Retrieved July 5, 2012.
  25. ↑ "Interstate 14 Designation by Congress in FAST Act". Official Blog for PTP Alliance. Ports-to-Plains Blog.
  26. ↑ "April 28 Texas Minute Order" (PDF).
  27. ↑ "Interstate 14 on its way across Texas". Houston Chronicle.
  28. ↑ Gibson, Terry R. (November 27, 2012). "Designation of I-44" (PDF) (Letter to John F. Sullivan III). Raleigh, NC: North Carolina Department of Transportation. Retrieved May 15, 2014.
  29. ↑ Tata, Anthony J. (June 11, 2014). "Route to Opportunity and Development Act (ROAD Act)" (PDF) (Letter to G.K. Butterfield). North Carolina Department of Transportation. Retrieved September 4, 2014.
  30. ↑ "Future Interstate Designation: Raleigh, NC to Norfolk, VA" (PDF). North Carolina Department of Transportation. June 11, 2014. Retrieved September 4, 2014 – via Regional Transportation Alliance.
  31. ↑ "Interstate 495 to Rocky Mount—Future I-44 to Hampton Roads". Raleigh, NC: Regional Transportation Alliance. December 14, 2013. Retrieved February 16, 2014.
  32. ↑ "Raleigh-Norfolk: I-495, I-44, I-50, I-89, I-56 ... ?". Raleigh, NC: Regional Transportation Alliance. December 31, 2015. Retrieved February 1, 2016.
  33. ↑ "AASHTO Electronic Balloting System - View Ballot - Agenda and List of Applicatons SM-2016" (PDF). AASHTO. Retrieved May 5, 2016.
  34. ↑ "A victory ten years in the making". RTA.
  35. ↑ Wilson, Marcia R. (March 17, 2016). "Minutes and Summary" (PDF). La Grange, NC: Highway 70 Corridor Commission of North Carolina. Retrieved April 7, 2016.
  36. ↑ "AASHTO Electronic Balloting System - View Ballot - Agenda and List of Applicatons SM-2016" (PDF). AASHTO. Retrieved May 5, 2016.
  37. ↑ "Hwy. 67 supporters discuss funding with Ark. governor". Daily American Republic. Retrieved 2016-04-10.
  38. ↑ arkansasbusiness.com http://www.arkansasbusiness.com/article/110907/walnut-ridge-others-see-development-boost-from-i-57-designation. Missing or empty |title= (help)
  39. ↑ "I-49 Coming to Missouri" (Press release). Missouri Department of Transportation. August 12, 2010. Archived from the original on January 6, 2014. Retrieved July 5, 2012.
  40. ↑ North Carolina Department of Transportation. "NCDOT: I-74 Feasibility Study". North Carolina Department of Transportation. Retrieved February 18, 2016.
  41. ↑ "I-74". Kentucky Transportation Cabinet. Retrieved February 18, 2016.
  42. ↑ Lee, Anita (October 29, 2004). "Gulfport to Wiggins Interstate Sought". Sun Herald (Biloxi, MS).
  43. ↑ "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.
  44. ↑ 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.
  45. ↑ "FAI9 1957". Indiana Interstates: 1957 Interstate Highway System. Archived from the original on June 23, 2002. Retrieved May 7, 2008.
  46. 1 2 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.
  47. ↑ "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.
  48. ↑ 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.
  49. ↑ Senator Olympia Snowe (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.
  50. ↑ "Transportation Committee passes bill for east-west highway study". Bangor Daily News. Retrieved February 18, 2012.
  51. ↑ "It's now I-98, not Rooftop Highway". Adirondack Daily Enterprise (Saranac Lake, NY). August 1, 2009. Retrieved February 2, 2011.
  52. ↑ [Staff writer] (June 28, 2014). "Corning area now has 2 interstates; U.S. 15 designated I-99 to Pa. border". Star-Gazette. Archived from the original on July 14, 2014. Retrieved June 28, 2014.
  53. 1 2 3 Homer, Pierce R. (November 2006). "Construction of I-99: Appropriation Act Item 427 H. (Special Session I, 2006)" (PDF). Virginia Department of Transportation. Retrieved August 10, 2013.
  54. ↑ Virginia Department of Transportation (November 2006). Construction of I-99: Appropriation Act Item 427 H. (Special Session I, 2006) Report to the Chairmen of House Committees on Transportation and Appropriations and Senate Committees on Transportation and Finance (PDF) (Report). Richmond: Virginia Department of Transportation. p. 22. Retrieved January 10, 2016.

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