Wikipedia

Interstate 27

Not to be confused withTexas State Highway 27.

Interstate 27(I-27[a]) is anInterstate Highway,entirely in theUS stateofTexas,running north fromLubbocktoI-40inAmarillo.These two cities are the onlycontrol citieson I-27;[3]other cities and towns served by I-27 include (from south to north)New Deal,Abernathy,Hale Center,Plainview,Kress,Tulia,Happy,andCanyon.In Amarillo, I-27 is commonly known as theCanyon Expressway(orCanyon E-Way), although it is also calledCanyon Driveon its access roads. I-27 was officially designated theMarshall Formby Memorial Highwayafter former attorney and State Senator Marshall Formby in 2005.[1]The entire length of I-27 replacedUS Highway 87(US 87) for through traffic. An extension of I-27 north toRaton, New Mexico,and south toLaredo, Texas,was approved in 2022.

Interstate 27 marker
Interstate 27
Marshall Formby Memorial Highway
Map
I-27 highlighted in red
Route information
Maintained byTxDOT
Length124.132 mi[1](199.771 km)
Existed1969[1]–present
NHSEntire route
Major junctions
South endUS 87/Loop 289inLubbock
Major intersections
North endI-40/US 60/US 87/US 287inAmarillo
Location
CountryUnited States
StateTexas
CountiesLubbock,Hale,Swisher,Randall,Potter
Highway system
←SH 26→SH 27

Route description

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Southern terminus in Lubbock

I-27 parallels theBNSF Railway's Plainview Subdivision, which splits from itsChicago–Southern CaliforniaTranscon line atCanyonand runs south to Lubbock. A large amount of the alignment is on former US 87, but several portions through built-up areas have been bypassed, as well as two longer areas where US 87 still follows the old road.[4]

The Interstate begins at a point along the four-lane US 87 freeway south of downtown Lubbock. Mile 0 is posted near 77th Street,[5]about five blocks south ofLoop 289.Exit numberingbegins just to the south, with exit 1 at the 82nd Street interchange; the freeway becomes six lanes at its north end. The Loop 289 interchange is acloverleafbetween the onewayfrontage roadsof each highway, and with direct ramps from I-27 south to Loop 289 west (exit 1A) and Loop 289 east to I-27 north.US 84(Avenue Q and Slaton Highway) crosses I-27 at athree-level diamond interchange,with an extra approach from the northeast carrying Avenue A into the junction. Exit 1B connects I-27 south to US 84 and the Loop 289 frontage roads, while all traffic from US 87 north to US 84, Avenue A, or Loop 289 must use exit 1 for 82nd Street.[4]

The six-lane cross section that began at exit 1 remains through Lubbock. Major junctions in that city includeUS 62/State Highway 114(SH 11, 19th Street; exit 3) andUS 82(Marsha Sharp Freeway; exit 4). Between these two interchanges, the frontage roads temporarily end as I-27 crosses over a rail line.Spur 326(Avenue Q) merges with I-27 at exit 6A, and exit 6B is asplit diamond interchangewith Loop 289. The outer lanes leave atFarm to Market Road 2641(FM 2641, Regis Street; exit 8), reducing I-27 to two lanes in each direction as it passesLubbock Preston Smith International Airportand leaves the city.[4]

Downtown Lubbock, as seen from I-27

I-27 crosses over the Plainview Sub for the first time north ofFM 1294(Drew Street, exit 11), and another short gap exists in the frontage roads there. North of the overpass, the frontage roads are two-way; I-27 then passes throughNew Deal,bypassing the central part of the town to the west. Old US 87 between exits 13 and 15 is nowLoop 461;at exit 15, I-27 begins to parallel the rail line, just to its west. Along this part of the highway, and other similar portions, slip ramps still connect the mainlanes with the frontage roads, but intersecting roads pass over all four roadways and the railroad on a long bridge; a pair of two-way roadways connects the frontage roads to the crossroad, with the one on the east crossing the railroad at-grade.[4]

As it approachesAbernathy,I-27 curves west away from the Plainview Sub. The old main road through the city, between exits 20 and 22, is nowLoop 369;I-27 passes through 1.5 blocks to the east. Despite I-27's location north of Abernathy, 0.5 miles (0.80 km) west of the rail line, all interchanges between Abernathy andHale Center,except the one atFM 54(exit 24), use the same configuration where the intersecting road crosses over all roadways. Approaching Hale Center, I-27 curves northeast as it splits fromFM 1424(exit 36) at a simplediamond interchange.The freeway passes through the city one block east of the old road, nowBusiness I-27-T(Bus. I-27-T), which is accessed at exits 36 and 38. As it leaves Hale Center, I-27 turns to the northeast, following the northwest side of the rail line.[4]

The next two interchanges along the railroad between Hale Center andPlainviewuse the same style, in which the crossroad goes over everything.Bus. I-27-Usplits at exit 45, a modified Y interchange, to pass through Plainview, and I-27 travels west of that city on a bypass. The two outer interchanges on this bypass,FM 3466(exit 48) and Quincy Street (exit 51), are handled in the same way as the interchanges along the railroad, but the other two,US 70(exit 49) andSH 194(exit 50), are standard diamonds. Between exits 49 and 50 is another overpass over the frontage roads—24th Street—with no separate slip ramps. Bus. I-27-U ends at atrumpet interchange(exit 53) north of Plainview, where I-27 again begins to parallel the Plainview Sub to the west. Both interchanges between this one and the first split with US 87 (exit 61), a modified Y interchange south ofKress,continue the pattern with the crossroad bridging over everything.[4]

After it leaves US 87, I-27 is no longer next to the rail line, but it continues to handle interchanges as it does alongside the line, except atSH 86(exit 74), a standard diamond interchange that servesTulia.US 87 rejoins the freeway at a modified diamond interchange (exit 77) north of Tulia, at which I-27 crosses to the east side of the Plainview Sub before paralleling it to that side. After several of the typical interchanges adjacent to the railroad, US 87 splits again at a modified Y interchange (exit 88) south ofHappy.Except for the northernmost one, all the interchanges on the bypass of Happy andCanyonare diamond interchanges; there is a break in the frontage road north ofFM 3331(exit 108), where I-27 crosses thePrairie Dog Town Fork Red River.Exits 109 (Country Club Road) and 110 (US 87 south,US 60west) are integrated, with some access to one road provided via the other.[4]

Northern terminus at I-40 south of downtown Amarillo

I-27 is overlapped by US 60 and US 87 from exit 110 north of Canyon to the end of the Interstate in Amarillo; here, the frontage roads are one-way. Several near the south end are handled by bridging the intersecting road over all roadways, but, once I-27 crossesLoop 335(exit 116), almost all interchanges are diamond interchanges. At exit 119A, which marks the south end of the six-lane cross section in Amarillo, Hillside Road passes under both the mainlanes and the frontage roads, with two ramps providing partial access. Other connections with Hillside Road are made via Western Street (exit 119B), which crosses the frontage roads at grade. The end of I-27 atI-40(exit 123B) is a fully directionalturbine interchange;US 287also passes through, using I-40 to the east and US 60/US 87 to the north. Four lanes continue beyond I-40 and are joined by several from the I-40 ramps, making the northernmost portion of the Canyon Expressway five lanes in each direction. Several blocks beyond I-40, the highway ends at a split into twoone-way pairs.Northbound traffic feeds onto Fillmore Street (US 87 north) and Buchanan Street (US 60 east and US 287 north), while southbound traffic approaches on Taylor Street (US 287 south) and Pierce Street (US 60 west and US 87 south). The rightmost of the five northbound lanes is barrier-separated from the rest, forcing traffic exiting I-40 west onto Buchanan Street. Through the I-40 interchange and the split, the frontage roads are discontinuous.[4]

History

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I-27 in Tulia

The roadway between Lubbock and Amarillo was part of the Puget Sound to Gulf Highway (SH 9), one of the original state highways defined in 1917.[6]In 1926, it became part ofUS 385,[7]which was absorbed intoUS 87in 1935.[8]The SH 9overlapwas dropped in the 1939 renumbering.[9][10]Pavingbegan in 1929 nearPlainviewand was almost complete by 1940,[11]with only about eight miles (13 km) south ofCanyonstillbituminous surfaceduntil later that decade.[12][13]The Canyon Expressway, afreewayupgrade of US 87 (alsoUS 60there) between Canyon and Amarillo, was built in the late 1950s and early 1960s.[11]This highway, with adesign speedof 45 mph (72 km/h), includedfrontage roadsalong its entire length and ended in each city with a Y interchange:[14]the split of US 60 and US 87 in Canyon, and a split between the twooneway pairsof Taylor and Fillmore streets and Pierce and Buchanan streets in Amarillo. The Dumas Expressway, a freeway upgrade of US 87 north from Amarillo, opened several years later, feeding into the same one-way pairs.[15]

Four-laning of US 87 from Canyon to Lubbock was completed in the late 1960s, with the last section to be widened lying betweenAbernathyand Lubbock. While this was built as a surfacedivided highwaysouth of Canyon,[16][17][18]short sections of freeway were built throughNew Deal,Abernathy, andHale Center,andinterchangeswere built atUS 70andSH 194on the new bypass of Plainview and atSH 86(toward the west) south ofTulia.[19][14][15]The original two-lane road, where bypassed, becameLoop 461(in New Deal in 1968; marked as Bus. US 87-G),[20]Loop 369(in Abernathy in 1962),[21]a local street (in Hale Center), andLoop 445(in Plainview in 1967; marked as Bus. US 87-G).[22]

I-27 was not part of the originalInterstate Highway Systemchosen in the 1950s; the spur from I-40 to Lubbock was authorized with theFederal-Aid Highway Act of 1968,which added 1,500 miles (2,400 km) to the system.[23]George H. Mahon,member of theUS House of Representativesfrom 1935 to 1979 and chair of theHouse Committee on Appropriationsafter 1964, helped secure funding for the road. Texas officially designated the highway in early 1969, originally running fromUS 62near downtown Lubbock to I-40 in Amarillo; the definition was extended south through Lubbock to the south side of the loop in early 1976.[1]The existing freeway sections, including the Canyon Expressway, were absorbed into I-27 despite not being built toInterstate standards.New construction began in 1975, from Lubbock north to New Deal, and most of the freeway was completed in the 1980s.[15]Two long sections of US 87 were bypassed:Happyto Canyon on December 5, 1986,[11]andKressto Tulia soon after;[15]I-27 was complete north of Lubbock by 1988.[24]Most of the Happy–Canyon bypass was built along the two-laneFM 1541,which now ends at exit 103 southeast of Canyon.[25]

The final section of I-27 to be built was through Lubbock, inside Loop 289; this was built in the early 1990s and completed on September 3, 1992. On that day, a ceremony at the 34th Street overpass opened the road from 19th Street (US 62) to 54th Street,[26]completing Texas's 3,200-mile (5,100 km) portion of the Interstate Highway System.[27]At its south end, the new I-27 connected to an existing freeway upgrade of US 87, built about 1970,[15]to atraffic circleatUS 84(just north of Loop 289).[28]The old route of US 87 through Lubbock becameBus. US 87-Gupon completion of I-27.[29]Twobusiness loopsof I-27 have been designated: through Plainview (former Loop 445) in early 1991 and through Hale Center (formerly a local street) in 2002.[30][31]

The completion of I-27, costing a total of $453.4 million (equivalent to $884 million in 2023[32]), encouraged growth along the highway: toward the northside of Lubbock and the southwest in Amarillo. Many other areas of Lubbock, however, have not seen this growth.[33]Plainview, the largest city between Lubbock and Amarillo, has the only significantretail clusteroutside the two terminal cities and has attracted several industries.[citation needed]

Future

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Main article:Ports to Plains Corridor

In 1995, a study of a southern extension of I-27 toI-10found that a full freeway extension would not be economically feasible,[34]instead recommending limited upgrades to the three corridors studied:SH 349viaMidlandandOdessato east ofFort Stockton,US 87viaBig SpringtoSonoraorJunction,andUS 84viaSweetwaterto Sonora or Junction. Of the three corridors, the Sweetwater route came the closest to warranting a freeway.[35]TheTransportation Equity Act for the 21st Century,passed in 1998, designated I-27 as part of thePorts to Plains Corridor,aHigh Priority CorridorfromMexicoatLaredotoDenver.[36]This corridor crossesI-20at Big Spring and Midland (via a split) and I-10 at Sonora.[37]The part of the Ports-to-Plains Corridor within Texas was a proposedTrans-Texas Corridor.[38]Some parts of this plan haveI-14possibly ending where I-27 will cross I-20. TheTexas Department of Transportation(TxDOT) recommends studying I-27 extension again.[39]I-27 is planned to be extended from Loop 289 to FM 1585 (Loop 88).[40]

On June 10, 2019, GovernorGreg Abbottsigned Texas House Bill 1079, which authorizes a comprehensive study to extend I-27 north of Amarillo and south of Lubbock toLaredo.[41]The proposed route south of Lubbock would have the Interstate go toLamesa,then split with one route going towardMidlandand the other traveling toBig Spring.The two routes would then merge nearSterling City,travel throughSan AngeloandDel Rio,travel near the border untilEagle Pass,turn east toCarrizo Springs,then travel south to Laredo.[42]

In June 2024, it was announced[by whom?]that I-27 would potentially run along theHeartland Expresswayand theTheodore Roosevelt ExpresswaythroughNebraska,South Dakota,North Dakota,andMontana.[43]It also forms part of the Great Plains International Trade Corridor, continuing north toSaskatoon, Saskatchewan.[44]Currently, no Interstates connect to Saskatchewan.

Numbering

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On March 15, 2022, the2022 Consolidated Appropriations Actwas signed by PresidentJoe Bidenthat added the extension of I-27 north toRaton, New Mexico,and south toLaredoto the Interstate Highway System.[45]A bill introduced in March 2023 would explicitly designate the extension as I-27 with twoauxiliary routesnumbered I-227 and I-327.[46]I-227 is proposed to be routed viaSH 158fromSterling Cityto Midland andSH 349from Midland toLamesa;I-327 would utilize US 287 fromDumasto theOklahomastate line.[47][48]It would also formally name the Interstate the Ports-to-Plains Corridor.[49][50]The bill was introduced by legislators from both Texas and New Mexico.[51][52]On August 1, 2023, the legislation passed through the U.S. Senate with some slight modifications; I-227 was redesignated as I-27W with I-27 between Sterling City and Lamesa redesignated as I-27E and I-327 was redesignated as I-27N.[53][54]The act was passed again by the Senate in March 2024 after some changes were made in the U.S. House of Representatives in December 2023.[55]

Exit list

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CountyLocationmikmExitDestinationsNotes
Lubbock​FM 1585(FutureLoop 88)Future interchange; current southern terminus of the Tahoka Highway freeway
​114th StreetFuture interchange
Lubbock98th StreetFuture interchange
0.00.01
US 87south –Tahoka
US 84/Loop 289/ 82nd Street –Post		Current southern terminus; signed as exits 1 (82nd Street), 1A (Loop 289 west) and 1B (US 84 / Loop 289 east) southbound; roadway continues as US 87 south
1.32.11A50th Street –Buffalo Springs Lake,Ransom CanyonSigned as exit 1C southbound
2.23.5234th Street (FM 835) / Buddy Holly Avenue
3.35.33US 62/SH 114(19th Street) –Floydada,Levelland,Texas Tech University
3.76.03A13th Street, BroadwayNorthbound exit and southbound entrance
4.36.94US 82(Marsha Sharp Freeway) –Crosbyton,Brownfield,Texas Tech University
5.28.45Buddy Holly Avenue / Municipal DriveSouthbound exit and northbound entrance
6.210.06ASpur 326(Avenue Q)Southbound exit and northbound entrance
5.89.36BLoop 289Signed as exit 6 northbound
6.810.97Yucca Lane
8.113.08FM 2641(Regis Street) –Lubbock Preston Smith International Airport
9.114.69Lubbock Preston Smith International Airport,General Aviation, FAA
10.516.910Keuka Street
11.618.711FM 1294–Shallowater
​12.520.112County Road 58Northbound exit and southbound entrance
New Deal13.521.713
Loop 461north –New Deal
14.623.514FM 1729
15.625.115
Loop 461south –New Deal		Southbound exit and northbound entrance
​17.728.517County Road 53
​20.533.020FM 597(Loop 369north) –Abernathy,AntonNorthbound exit and southbound entrance
HaleAbernathy21.334.321FM 597/FM 2060/ Main Street
22.335.922
Loop 369south –Abernathy		Southbound exit and northbound entrance
​24.339.124FM 54–Spade,Petersburg
​27.644.427County Road
​31.751.031
FM 37east		South end of FM 37 overlap
​32.652.532
FM 37west –Cotton Center,Fieldton		North end of FM 37 overlap
​36.358.436
FM 1424north / Main Street (I-27 Bus.north)
Hale Center37.760.737FM 1914(Cleveland Street)
​38.562.038Main Street (I-27 Bus.south)Southbound exit and northbound entrance
​41.266.341County Road
​43.670.243FM 2337
​45.372.945
I-27 BLnorth –Plainview
Plainview48.077.248FM 3466–Hale County AirportNorthbound exit and southbound entrance
48.978.749US 70–Plainview,Floydada,Muleshoe
50.881.850SH 194–Wayland Baptist University,Hart
51.883.451Quincy Street
​52.985.153
I-27 BLsouth –Plainview
​54.287.254FM 3183
​56.290.456FM 788–Edmonson
Swisher​61.398.761
US 87north / County Road –Kress		North end of US 87 overlap
​63.2101.763FM 145–Kress
​68.4110.168FM 928
Tulia74.5119.974SH 86–Tulia
75.6121.775NW 6th Street
​77.5124.777
US 87south –Tulia		South end of US 87 overlap
​82.0132.082FM 214
​83.1133.783FM 2698
​88.2–
88.6		141.9–
142.6		88
US 87north /FM 1881–Happy		North end of US 87 overlap; signed as exits 88A (FM 1881) and 88B (US 87 north) northbound
Swisher–Randall
county line		Happy90.2145.290FM 1075–Happy
Randall​92.2148.492Haley Road
​94.1151.494FM 285–Wayside
​96.3155.096Dowlen Road
​99.4160.099Hungate Road
​103.5166.6103
FM 1541north / Cemetery Road
Canyon106.7171.7106SH 217–Canyon,Palo Duro Canyon State Park
​108.2174.1108


ToUS 60west (Hunsley Road) /FM 3331–Hereford
​110.4177.7109Country Club Road
​110.8178.3110

US 60west /US 87south –Canyon,Hereford		South end of US 60/US 87 overlap; no northbound exit
​112.0180.2111Rockwell Road
​113.0181.9112FM 2219
​113.8183.1113McCormick Road
​116.1186.8115Sundown Lane
Amarillo117.1188.5116Loop 335(Hollywood Road)
118.0189.9117Bell Street / Arden Road
119.6192.5119Hillside Road / Western Street / 58th AvenueSigned as exits 119A (Hillside Road west) and 119B (Western Street / 58th Avenue) southbound
120.7194.2120ARepublic AvenueSouthbound exit and northbound entrance
121.0194.7120B45th AvenueSigned as exit 120 northbound
121.6195.7121AGeorgia StreetSigned as exit 121 northbound
122.3196.8121BHawthorne Drive / Austin StreetSouthbound exit and northbound entrance
122.2196.7122AParker Street / Moss LaneNorthbound exit and southbound entrance
122.8197.6122BFM 1541(Washington Street) / 34th Avenue
123.4198.6122C34th Street / Tyler StreetSouthbound exit and northbound entrance
Potter123.7199.1123A26th AvenueSigned as exit 123 southbound
124.1199.7123B
I-40/US 287south –Oklahoma City,Fort Worth,Albuquerque


US 60east /US 87/US 287north –Dumas,Pampa,Downtown		Current northern terminus; I-40 exit 70; freeway continues as US 60 east / US 87/US 287 north
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Business routes

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Hale Center

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Business Interstate 27-T
LocationHale Center
Length1.168 mi[31](1.880 km)
Existed2002[31]–present

Business Interstate 27-T(Bus. I-27-T) is a 1.168-mile-long (1.880 km)business loopinHale Centerbetween exits 36 and 38 of I-27. It was bypassed in about 1962 but was turned over to the city until April 5, 2002, when the new business route was authorized.[15][31]Along the way, it intersectsFM 1914(Cleveland Street).

Major intersections
The entire route is inHale Center,Hale County.

mi[56]kmDestinationsNotes
0.00.0I-27 /US 87
0.50.80FM 1914(Cleveland Street)
1.1681.880I-27 /US 87
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Plainview

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Main article:Interstate 27 Business (Plainview, Texas)
Business Interstate 27-U
LocationPlainview
Length9.282 mi[30](14.938 km)
Existed1990[30]–present

Business Interstate 27-U(Bus. I-27-U) is a 9.282-mile (14.938 km) business loop inPlainview.

Notes

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  1. ^Some sources use "IH-27", as "IH" is an abbreviation used by TxDOT for Interstate Highways.[2]

References

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  1. ^abcdTransportation Planning and Programming Division (n.d.)."Interstate Highway No. 27".Highway Designation Files.Texas Department of Transportation.RetrievedJanuary 28,2013.
  2. ^Transportation Planning and Programming Division (n.d.)."Highway Designations Glossary".Texas Department of Transportation.RetrievedMay 20,2020.
  3. ^American Association of State Highway and Transportation Officials(2001).List of Control Cities for Use in Guide Signs on Interstate Highways.American Association of State Highway and Transportation Officials.[full citation needed]
  4. ^abcdefgh"Overview Map of I-27"(Map).Google Maps.RetrievedFebruary 15,2008.
  5. ^Transportation Planning and Programming Division (2018).Texas County Mapbook(PDF)(Map) (2018 ed.). 1:72,224.Texas Department of Transportation.p. 433.RetrievedAugust 3,2018.
  6. ^Commerce Journal,Highway Commission Adopts 25 Highways, July 6, 1917[full citation needed]
  7. ^Bureau of Public Roads&American Association of State Highway Officials(November 11, 1926).United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials(Map). 1:7,000,000. Washington, DC:United States Geological Survey.OCLC32889555.Archivedfrom the original on April 13, 2017.RetrievedNovember 7,2013– viaWikimedia Commons.
  8. ^Transportation Planning and Programming Division (n.d.)."U.S. Highway No. 87".Highway Designation Files.Texas Department of Transportation.
  9. ^H.M. Gousha Company,Official Road Map: Texas(Conoco), 1938ArchivedApril 9, 2014, at theWayback Machine[full citation needed]
  10. ^Transportation Planning and Programming Division (n.d.)."State Highway No. 9".Highway Designation Files.Texas Department of Transportation.
  11. ^abcJack Faucett Associates."Economic Development History of Interstate 27 in Texas".Federal Highway Administration.Archived fromthe originalon May 7, 2006.
  12. ^Texas State Highway Department,General Highway Maps:Lubbock[permanent dead link‍],Hale[permanent dead link‍],Swisher[permanent dead link‍],Randall[permanent dead link‍],andPotterCounties, partially revised to February 1, 1940[dead link‍][full citation needed]
  13. ^Rand McNally & Company,Texas-Oklahoma-Eastern New Mexico(Sinclair), 1946ArchivedApril 9, 2014, at theWayback Machine[full citation needed]
  14. ^abTexas State Highway Department,General Highway Maps:Lubbock[permanent dead link‍],Hale[permanent dead link‍],Swisher[permanent dead link‍],Randall[permanent dead link‍],andPotter[permanent dead link‍]Counties, andAmarillo and vicinity,state highways revised to January 1, 1961[dead link‍][full citation needed]
  15. ^abcdefFederal Highway Administration,National Bridge Inventory,2006[full citation needed]
  16. ^General Drafting Company,Texas(Enco), 1961ArchivedApril 9, 2014, at theWayback Machine[full citation needed]
  17. ^H.M. Gousha Company,Texas(Texaco), 1967ArchivedApril 9, 2014, at theWayback Machine[full citation needed]
  18. ^H.M. Gousha Company,Texas(Texaco), 1969ArchivedAugust 14, 2007, at theWayback Machine[full citation needed]
  19. ^United States Geological Survey(July 1, 1983).Plainview, Texas Quadrangle(Map). 15 minute. Reston, VA: United States Geological Survey.Archivedfrom the original on July 15, 2022.RetrievedOctober 21,2011– via MSR Maps.(before the bypass was upgraded to freeway standards)[full citation needed][full citation needed]
  20. ^Transportation Planning and Programming Division (n.d.)."State Highway Loop No. 461".Highway Designation Files.Texas Department of Transportation.
  21. ^Transportation Planning and Programming Division (n.d.)."State Highway Loop No. 369".Highway Designation Files.Texas Department of Transportation.
  22. ^Transportation Planning and Programming Division (n.d.)."State Highway Loop No. 445".Highway Designation Files.Texas Department of Transportation.
  23. ^Federal Highway Administration."FHWA By Day: December 13".Federal Highway Administration.Archivedfrom the original on October 5, 2006.
  24. ^Rand McNally,1988 Road Atlas[full citation needed]
  25. ^Transportation Planning and Programming Division (n.d.)."Farm to Market Road No. 1541".Highway Designation Files.Texas Department of Transportation.
  26. ^Federal Highway Administration (May 5, 2007)."Previous Interstate Facts of the Day".Federal Highway Administration.Archivedfrom the original on April 26, 2006.
  27. ^Texas Department of Transportation."TxDOT History: 2000 to 1971".Texas Department of Transportation.Archivedfrom the original on September 8, 2007.
  28. ^United States Geological Survey (July 1, 1975).Southern Lubbock, Texas Quadrangle(Map). 7.5 minute. Reston, VA: United States Geological Survey.Archivedfrom the original on July 15, 2022.RetrievedOctober 21,2011– via MSR Maps.[full citation needed]
  29. ^Transportation Planning and Programming Division (n.d.)."Business U.S. Highway No. 87-G".Highway Designation Files.Texas Department of Transportation.
  30. ^abcTransportation Planning and Programming Division (n.d.)."Business Interstate Highway No. 27-U".Highway Designation Files.Texas Department of Transportation.RetrievedNovember 28,2014.
  31. ^abcdTransportation Planning and Programming Division (n.d.)."Business Interstate Highway No. 27-T".Highway Designation Files.Texas Department of Transportation.
  32. ^Johnston, Louis; Williamson, Samuel H. (2023)."What Was the U.S. GDP Then?".MeasuringWorth.RetrievedNovember 30,2023.United StatesGross Domestic Product deflatorfigures follow theMeasuringWorthseries.
  33. ^Carver, Jayme Lozano; Nicholson-Messmer, Elijah (July 19, 2024)."Interstate 27 has divided Lubbock for decades. North and east side residents want that to change".The Texas Tribune.RetrievedAugust 13,2024.
  34. ^Austin American-Statesman,Towns to vie for I-27 extension, July 18, 1995[full citation needed]
  35. ^San Antonio Express-News,Engineers opt for improving 3 roads, May 14, 1996[full citation needed]
  36. ^Ports to Plains study,Frequestly Asked QuestionsArchived2012-01-15 at theWayback Machine,accessed August 2007[full citation needed]
  37. ^Ports to Plains study,Corridor MapArchived2012-01-15 at theWayback Machine,accessed August 2007[full citation needed]
  38. ^Texas Department of Transportation,Trans-Texas Corridor conceptual map, 2002Archived2007-08-20 at theWayback Machine[full citation needed]
  39. ^"TxDOT recommends studying I-27 extension again".Archivedfrom the original on November 12, 2018.RetrievedJune 10,2019.
  40. ^"Final_Report_USRN_Fall_R_1.pdf"(PDF).RetrievedJuly 28,2024.
  41. ^"Abbott signs bill requesting study on I-27 expansion".Associated Press.June 17, 2019.Archivedfrom the original on June 19, 2019.RetrievedJune 19,2019.
  42. ^Dotray, Matt (June 12, 2019)."Governor signs bill calling for Interstate 27 extension study".Lubbock Avalanche-Journal.Archivedfrom the original on June 19, 2019.RetrievedJune 19,2019.
  43. ^Anhalt, Michael (June 13, 2024)."New interstate to run through North Dakota".KFYR-TV.RetrievedJune 14,2024.
  44. ^Ports-to-Plains Trade Corridor Coalition,PTP Partners: Great Plains International Trade Corridor,accessed August 2007ArchivedSeptember 16, 2008, at theWayback Machine[full citation needed]
  45. ^Driggars, Alex (March 15, 2022)."Raton to Laredo corridor added to Interstate Highway System, paving way for I-27 expansion".Lubbock Avalanche-Journal.Archivedfrom the original on July 15, 2022.RetrievedMarch 17,2022.
  46. ^Clark, Carol A. (March 30, 2023)."Luján Joins Legislation To Name Future Interstate Ports-To-Plains Corridor From Laredo, Texas To Raton, New Mexico As 'Interstate 27'".Los Alamos Daily Post.RetrievedMay 12,2023.
  47. ^Text of the I–27 Numbering Act of 2023atCongress.gov
  48. ^Driggars, Alex (March 28, 2023)."Cruz, Cornyn introduce legislation to name I-27 extension project".Lubbock Avalanche-Journal.RetrievedApril 4,2023.
  49. ^Stringer, Matt (March 29, 2023)."Cruz, Cornyn Work to Enable New 'Ports-to-Plains' Texas Interstate Highway".The Texan.Austin.RetrievedMay 12,2023.
  50. ^Johnston, Georgina (March 28, 2023)."New bill would name Ports-to-Plains Corridor 'Interstate 27'".Everything Lubbock.KLBK-TV/KAMC-TV.RetrievedMay 12,2023.
  51. ^Maxwell, Nicole (March 30, 2023)."New Mexico and Texas could get new interstate".NM Political Report.RetrievedMay 12,2023.
  52. ^Ellis, Dusty (July 12, 2023)."What you need to know about Interstate 27".ConchoValleyHomepage.com.RetrievedJuly 13,2023.
  53. ^McEwen, Mella (August 1, 2023)."Senate passes act to create I-27 West through Midland".Midland Reporter Telegram.RetrievedAugust 21,2023.
  54. ^Bordner, Zachery (August 5, 2023)."MOTRAN talks I-27, what it means for Midland/Odessa, Big Spring".Yourbasin.RetrievedAugust 21,2023.
  55. ^Shaffer, Ben (March 11, 2024)."I-27 Numbering Act passes Senate, encompasses Midland".Midland Reporter-Telegram.RetrievedApril 11,2024.
  56. ^"Directions from I-27 to Cleveland Street"(Map).Google Maps.RetrievedMay 11,2013.
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