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Interstate business routes are roads connecting a central or commercial district of a city or town with an Interstate bypass. These roads typically follow along local streets often along a former U.S. route or state highway that had been replaced by an Interstate. Interstate business route reassurance markers are signed as either loops or spurs using a green shield shaped and numbered like the shield of the parent Interstate highway.

Interstate 10 marker

Interstate 10
Highway system

Along Interstate 10 (I-10), business routes are found in the four westernmost states through which I-10 passes: California, Arizona, New Mexico, and the far western region of Texas beyond the Pecos River. Although I-10 is a transcontinental highway, none of the states to the east along the Interstate have yet to designate I-10 business routes.

Some states regard Interstate business routes as fully integrated within their state highway system while other states consider them to be either local roads to be maintained by county or municipal authorities or a hybrid of state and local control.

Although the public may differentiate between different business routes by the number of the parent route and the location of the route, there is no uniform naming convention. Each state highway department internally uses its own designations to identify segments within its jurisdiction.

Contents

CaliforniaEdit

Interstate business routes in California are assigned by the California Department of Transportation (Caltrans), but are not maintained by Caltrans unless they overlay other routes of the state highway system. Local authorities may request route assignment from the Caltrans Transportation System Information Program, and all requests require approval of the executive committee of the American Association of State Highway and Transportation Officials (AASHTO).[1]

Blythe business loopEdit

 

Interstate 10 Business
LocationBlythe, California
Length7.9 mi[2] (12.7 km)

Interstate 10 Business is a business loop of I-10 at Blythe in Riverside County. The route begins at I-10 Exit 236 and goes to the north along Neighbours Boulevard. The route turns to the east along Hobsonway through town, then crosses underneath I-10 just before the Colorado River at the Arizona state line and emerges from the underpass as Riviera Drive where the route reconnects with I-10 at Exit 243. The business loop has major intersections with US 95 and SR 78.[2]

The route was formerly designated as part of US 60 except along Neighbours Blvd. The eastern part of the route also conveyed US 95.[3]

Major intersections

The entire route is in Blythe, Riverside County.

mi[2]kmDestinationsNotes
0.000.00   I-10 (Christopher Columbus Transcontinental Highway) / SR 78 (Neighbours Boulevard south)Western terminus; I-10 exit 236; highway continues as SR 78 (Neighbours Blvd.)
5.38.5   US 95 (Intake Boulevard) to I-10
7.912.7   I-10 / US 95Eastern terminus; I-10 west exit 242, east exit 243; road continues west as Donlon Street
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  •       Route transition


ArizonaEdit

The business loops within Arizona are maintained by the Arizona Department of Transportation (ADOT) and by municipal authorities. Interstate 10 (I-10) has five business loops within the state including one in La Paz County, the westernmost in Arizona through which I-10 passes, and four in Cochise County, the easternmost. ADOT identifies Interstate business loops as State Business Routes followed by the number of the parent Interstate. Individual loops along an Interstate are designated by adding parenthetical numbers that increase eastward and northward. Gaps in numbering represent removal of former routes or potential expansion. Many of the business loops are sections of highways which preceded I-10, such as U.S. Route 60, U.S. Route 70, U.S. Route 80 and State Route 86.

Quartzsite business loopEdit

 

State Business Route 10 (1)
LocationQuartzsite, Arizona
Length2.94 mi[4]:532 (4.73 km)
Existed1991–present[4]:532
A map of the Quartzsite business loop. The route is highlighted in red.

State Business Route 10 (1) is a business loop of I-10 at Quartzsite in La Paz County operated since 1991. The 2.9-mile (4.7 km) route, which follows along the local streets Quartzsite Boulevard, Main Street, and Riggles Avenue, begins at Exit 17 of I-10 and U.S. Route 95 (US 95) west of town and ends at Exit 24 of I-10 east of town. Between its termini, the route has a major intersection with State Route 95 (SR 95) where it ends a concurrency with US 95.[5]:407

The route was originally designated along part of US 60 and US 70.[6]

Major intersections

The entire route is in Quartzsite, La Paz County.

mi[5]:407kmDestinationsNotes
17.4528.08Dome Rock Road / Kuehn StreetWestern terminus
17.53–
17.61
28.21–
28.34
   US 95 north / I-10 – Phoenix, Los Angeles, CaliforniaWest end of US 95 overlap; I-10 exit 17
18.9630.51   US 95 south (Central Boulevard south) / SR 95 north (Central Boulevard north) – Yuma, ParkerEast end of US 95 overlap; southern terminus of SR 95
20.07–
20.15
32.30–
32.43
  I-10 – Phoenix, Los Angeles, CaliforniaI-10 exit 19
20.4232.86Kuehn Street / Dome Rock RoadEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Phoenix business loopEdit

 

Interstate 10 Business
LocationPhoenix, Arizona
Existed????–c. 1990[7]

Interstate 10 Business (Phoenix) was a business loop of I-10 at Phoenix, in Maricopa County, decommissioned circa 1990. Prior to the completion of I-10 through Phoenix, this business loop connected the eastern and western segments of the Interstate on a route through Downtown Phoenix.

Prior to its decommissioning, the route began at I-10 exit 142 (27th Avenue), heading south before turning east at Van Buren Street. At the five-legged intersection with Grand Avenue and 7th Avenue, I-10 BL began a concurrency with US 60 & US 89. This concurrency ended as I-10 BL turned right at 44th Street, heading south again before terminating at I-10 exit 153 (48th Street).[7]

The 44th Street leg of the Phoenix I-10 BL has since been replaced by part of the Hohokam Expressway (SR 143).

Major intersections

Major highway intersections as listed shortly before I-10 BL was decommissioned in 1990. The entire route was in Maricopa County.

LocationmikmDestinationsNotes
Phoenix0.000.00  I-10 west (Papago Freeway) – Los AngelesWestern terminus; road continued north as 27th Avenue
  I-17 (Black Canyon Freeway)
  SR 85 south (17th Avenue)West end of overlap with SR 85
     US 60 west / US 89 / SR 93 north (Grand Avenue) / SR 85 end / 7th AvenueEast end of overlap with SR 85; eastern terminus of SR 85; west end of overlap with US 60 / US 89; southern terminus of SR 93
   US 60 east / US 89 south (Van Buren Street)East end of overlap with US 60 / US 89
PhoenixTempe line  I-10 (Maricopa Freeway) – TucsonEastern terminus; road continued south as 48th Street
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Tucson business loopEdit

 

State Business Route 10 (2)
LocationTucson, Arizona
Length5.75 mi[8]:50 (9.25 km)
Existed1972–2001[9][10]
A map of the Tucson business loop. The route is highlighted in red.

State Business Route 10 (2) was a business loop of I-10 at Tucson in Pima County operated between 1972 and 2001. The 5.8-mile (9.3 km) route followed Benson Highway through the south end of Tucson, starting at Exit 262 in town and ended at Exit 267 east of town. Between its terminii, the route made a quick jog down Irvington Road near Tucson Boulevard to stay on Benson Highway and used a small section of Valencia Road at the end of Benson Highway to access Exit 267.[8]:49

The route was formerly designated as part of US 80 and SR 86.[11] Maintenance of the route was transferred to the city of Tucson upon decommissioning.[12]

Major intersections

The entire route was in Tucson, Pima County.

mi[8]:49kmDestinationsNotes
247.60398.47  I-10 eastWestern terminus; eastbound exit only; no access to I-10 from I-10 BL; no access from I-10 west to I-10BL
247.95399.04Park Avenue to   I-10 – Casa GrandeAccess to I-10 via Park Avenue and north frontage road; access to I-10 BL from I-10 west is at this exit
253.35407.73  I-10 – BensonEastern terminus; road continues as Valencia Road
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Benson business loopEdit

 

State Business Route 10 (3)
LocationBenson, Arizona
Length3.51 mi[4]:533 (5.65 km)
Existed1974–present[13]
A map of the Benson business loop. The route is highlighted in red.

State Business Route 10 (3) is a business loop of I-10 at Benson in Cochise County operated since 1974. The 3.5-mile (5.6 km) route follows along Benson's Fourth Street beginning at Exit 303 of I-10 west of town and ends at Exit 306 of I-10 east of town. Between its termini, the route has a major intersection with SR 80.[5]:408 The western part of the business loop from I-10 to SR 80 is signed as part of Historic US 80.[14]

The route was originally designated along part of SR 86 while US 80 was conveyed over a portion of the present business route.[15]

Major intersections

The entire route is in Cochise County.

Locationmi[5]:408kmDestinations[16][8]Notes
303.77488.87   I-10 / Historic US 80 begins – TucsonWestern terminus; I-10 west exit 303; no access to I-10 BL from I-10 west; western terminus of Historic US 80
Benson304.80490.53  Ocotillo Avenue/Ocotillo Road to I-10Former I-10 BS west
305.79492.12   SR 80 / Historic US 80 east – Tombstone, Bisbee, DouglasInterchange; western terminus of SR 80; western end of Historic US 80 concurrency
306.92493.94  I-10 – Tucson, El PasoEastern terminus; road continues north as Pomerene Road
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Benson business spurEdit

 

State Route 10 Spur
LocationBenson
Length0.55 mi[8]:53 (0.89 km)
Existed1969–1999[17][18]
A map of the Benson business spur. The route is highlighted in red.

State Route 10 Spur (SR 10S or I-10 BS) was a business spur of I-10 at Benson in Cochise County operated from 1969 to 1999. The 0.6-mile (1.0 km) route followed Ocotillo Road south from I-10 before ending at 4th Street (I-10 BL) west of downtown Benson.[8]:53

Maintenance of the route was transferred to the city of Benson upon decommissioning.[18]

Major intersections

The entire route was in Benson, Cochise County.

mi[8]:53kmDestinationsNotes
304.93490.74  I-10 / North Ocotillo Avenue – Tucson, El PasoWestern terminus; I-10 Exit 304; road continues north as Ocotillo Avenue
305.48491.62   I-10 BL (4th Street) to SR 80 east / South Ocotillo AvenueEastern terminus; road continues south as Ocotillo Avenue
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Willcox business loopEdit

 

State Business Route 10 (4)
LocationWillcox, Arizona
Length8.33 mi[4]:536 (13.41 km)
Existed1986–present[4]:536
A map of the Willcox business loop. The route is highlighted in red.

State Business Route 10 (4) is a business loop of I-10 at Willcox in Cochise County operated since 1986. The 8.3-mile (13.4 km) route, following along Willcox's Haskell Avenue, begins at Exit 336 of I-10 west of town and ends at Exit 344 of I-10 east of town. Between its termini, the route has a brief concurrency with SR 186.[5]:410

The route was formerly designated as part of US 666 and SR 86.[19]

Major intersections

The entire route is in Cochise County.

Locationmi[5]:410kmDestinationsNotes
336.39–
336.70
541.37–
541.87
   I-10 / US 191 – El Paso, Safford, Tucson, DouglasWestern terminus; I-10 exit 336
Willcox340.10547.34  SR 186 south (Maley Street) – Dos CabezasBegin overlay with SR 186
340.81548.48  SR 186 north (Rex Allen Drive)End overlay with SR 186
344.66554.68   I-10 / US 191 – Tucson, El Paso, SaffordEastern terminus; I-10 exit 344
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Bowie business loopEdit

 

State Business Route 10 (5)
LocationBowie, Arizona
Length4.41 mi[4]:537 (7.10 km)
Existed1980–present[4]:537
A map of the Bowie business loop. The route is highlighted in red.

State Business Route 10 (5) is a business loop of I-10 at Bowie in Cochise County operated since 1980. The 4.4-mile (7.1 km) route along Sixth Street in Bowie begins at Exit 362 of I-10 west of town and ends at Exit 366 of I-10 east of town. Between its termini, the route has no major intersections.[5]:411

The route was formerly designated as part of SR 86.[20]

Major intersections

The entire route is in Cochise County.

Locationmi[5]:411kmDestinationsNotes
362.41–
363.01
583.24–
584.21
  I-10 – Tucson, El PasoWestern terminus; I-10 exit 362
366.42–
366.91
589.70–
590.48
  I-10 – El Paso, TucsonEastern terminus; I-10 exit 366
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

San Simon business loopEdit

 

State Business Route 10 (6)
LocationSan Simon, Arizona
Length3.90 mi[4]:538–539 (6.28 km)
Existed1961–present[4]:539
A map of the San Simon business loop. The route is highlighted in red.

State Business Route 10 (6) is a business loop of I-10 at San Simon in Cochise County operated since 1961. The 3.9-mile (6.3 km) route follows San Simon's Sixth Street beginning at Exit 378 of I-10 west of town and ending at Exit 382 of I-10 east of town. Between its termini, the route has no major intersections.[5]:412–413

The route was formerly designated as part of SR 86.[21]

Major intersections

The entire route is in Cochise County.

Locationmi[5]:412–413kmDestinationsNotes
San Simon378.64–
379.15
609.36–
610.18
  I-10 – Tucson, El PasoWestern terminus; I-10 exit 378
382.13–
382.48
614.98–
615.54
  I-10 – El Paso, TucsonEastern terminus; I-10 exit 382
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


New MexicoEdit

All of the business loops within New Mexico are maintained by the New Mexico Department of Transportation (NMDOT). In New Mexico, Interstate business routes are named independently of their parent Interstate's designation with business loops of Interstate 25 (I-25) numbered between 10–19, those of I-10 between 20–29, and those of I-40 between 30–39. New Mexico business loop numbers ascend eastward and northward with gaps in numbering to allow for future designations. Within New Mexico, I-10 currently has business routes in Lordsburg and Deming.

Lordsburg business loopEdit

 

Business Loop 21
LocationLordsburg, New Mexico
Length4.370 mi[22] (7.033 km)

Business Loop 21 is a business loop of Interstate 10 at Lordsburg in Hidalgo County. The 4.4-mile (7.1 km) route, which follows the city's Motel Drive, begins at Exit 20 of I-10 west of town and ends at Exit 24 of I-10 and U.S. Route 70 (US 70) east of town.[23] Between its termini, the route has major intersections with US 70 and New Mexico State Road 494 (NM 494).[24]:4

The route was originally designated as part of US 80 while a portion of the business route also conveyed US 70.[25]

Major intersections

The entire route is in Lordsburg, Hidalgo County.

mi[24]:4kmDestinationsNotes
0.0000.000  I-10 – Deming, TucsonWestern terminus; I-10 west exit 20, east exit 20B
2.0673.327   US 70 west to NM 90 – Silver City, Duncan, GlobeInterchange; west end of overlap with US 70
2.1353.436East Bound Trucks (NM 494 south)Northern terminus of NM 494
4.3707.033   I-10 / US 70 – Deming, LordsburgEastern terminus; east end of overlap with US 70
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Deming business loopEdit

 

Business Loop 22
LocationDeming, New Mexico
Length4.458 mi[22] (7.174 km)

Business Loop 22 is a business loop of Interstate 10 at Deming in Luna County. The 4.5-mile (7.2 km) route begins at Exit 81 of I-10 and US 70 west of town and follows Pine Street and Motel Drive to Exit 85 of I-10, US 70, and US 180 east of town.[26] Between its termini, the route has major intersections with US 180, NM 418, and NM 549.[24]:5

The route was originally designated as part of US 70 and US 80 while a portion of the business route also conveyed US 180.[27]

Major intersections

The entire route is in Deming, Luna County.

mi[24]:5kmDestinationsNotes
0.0000.000  I-10 (US 70) – Lordsburg, Las CrucesWestern terminus; I-10 exit 81
0.6100.982   NM 497 (Eighth Street) – City ParkServes Mimbres Memorial Hospital
1.2301.979  NM 11 south (Gold Avenue) – Columbus, Palomas Mex.
3.7356.011  NM 549 eastFormer US 70/US 80 east
4.4587.174  I-10 (US 70 / US 180) – Lordsburg, Las CrucesEastern terminus; I-10 exit 85
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


TexasEdit

All of the business loops within Texas are maintained by the Texas Department of Transportation (TxDOT). Interstate 10 has four business loops in the state, each located in the far western Trans-Pecos region. Along I-10, TxDOT identifies each business route as Business Interstate 10 followed by an alphabetic suffix. Along Texas Interstates, the alphabetic suffixes on business route names ascend eastward and northward. There are gaps in the alphabetic values to allow for future system expansion. The alphabetic naming suffixes are included as small letters on the bottom of reassurance shields.

Sierra Blanca business loopEdit

 

Business Interstate 10-C
LocationSierra Blanca, Texas
Length2.747 mi[28] (4.421 km)
Existed1990–present[28]

Business Interstate 10-C or Bus. I-10-C is a business loop of Interstate 10 at Sierra Blanca in Hudspeth County commissioned in 1991. The 2.7-mile (4.3 km) route follows El Paso Street beginning at Exit 105 on I-10 west of town and ending at Exit 108 on I-10 east of town.[29] The route has one major intersection with Ranch to Market Road 1111 (RM 1111) to Cornudas and Dell City.[30][31]

The road was originally designated as part of US 80 (US 80). After October 15, 1965, the road was designated Texas State Highway Loop 416, although it was signed as a business route of US 80. This became the present Business I-10 designation on June 21, 1990.[32]

Major intersections

The entire route is in Sierra Blanca, Hudspeth County.

mi[29]kmDestinationsNotes
0.00.0  I-10 – Fort Hancock, El PasoWestern terminus
1.52.4  RM 1111 (Archie Ave.) – Cornudas, Dell City
2.74.3  I-10 – Allamoore, Van HornEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Van Horn business loopEdit

 

Business Interstate 10-D
LocationVan Horn, Texas
Length2.881 mi[33] (4.637 km)
Existed1990–present[33]
 
Bus. I-10-D in Van Horn

Business Interstate 10-D or Bus. I-10-D is a business loop of I-10 at Van Horn in Culberson County commissioned in 1991. The 2.9-mile (4.7 km) route, which follows along Ross Drive and Broadway Boulevard in Van Horn, begins at Exit 138 on I-10 west of town and ends at Exit 140B on I-10 east of town.[34] The road has major intersections with US 90 and Texas State Highway 54 (SH 54).[35]

The road was originally designated as part of US 80. On November 25, 1975, the road was designated Texas State Highway Loop 519, although it was signed as a business route of US 80.[36]

Major intersections

The entire route is in Van Horn, Culberson County.

mi[34]kmDestinationsNotes
0.00.0  I-10 – Sierra Blanca, El PasoWestern terminus
2.03.2   US 90 / SH 54 south (Van Horn Dr.) – ValentineBegin overlay with SH 54
2.13.4  SH 54 north (La Caverna St.) – Pine SpringsEnd overlay with SH 54
2.94.7  I-10 – Kent, San AntonioEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Balmorhea business loopEdit

 

Business Interstate 10-F
LocationBalmorhea, Texas
Length2.000 mi[37] (3.219 km)
Existed1991–present[37]

Business Interstate 10-F or Bus. I-10-F is a business loop of I-10 at Balmorhea in Reeves County commissioned in 1992. The route begins at Exit 206 on I-10 and Farm to Market Road 2903 (FM 2903, Fort Worth Street) north of town and ends at Exit 209 on I-10 and SH 17 (Main Street) east of the small community of Brogado. Although TxDOT certifies the length of the road as 2.0 miles (3.2 km), that length does not include a portion of the route concurrent with SH 17. This section brings the total length of the road to 4.6 miles (7.4 km).[38] The junction where the road merges with SH 17 is the only major intersection between the road's termini.[39]

The portion of Bus. I-10-F concurrent with SH 17 was formerly part of US 290 with the remainder formerly a southern extension of FM 2903.[37]

Major intersections

The entire route is in Reeves County.

Locationmi[38]kmDestinationsNotes
0.00.0   I-10 / FM 2903 – Kent, El Paso, ToyahWestern terminus
Balmorhea1.93.1  SH 17 south (Main St.) – Toyahvale, Fort DavisBegin overlay with SH 17
4.67.4   I-10 / SH 17 – Fort Stockton, San Antonio, Saragosa, PecosEastern terminus, end overlay with SH 17
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Fort Stockton business loopEdit

 

Business Interstate 10-G
LocationFort Stockton, Texas
Length1.398 mi[40] (2.250 km)
Existed1991–present[40]

Business Interstate 10-G or Bus. I-10-G is a business loop of I-10 at Fort Stockton in Pecos County commissioned in 1992. The route, following the city's Dickinson Boulevard, begins at Exit 256 on I-10 and US 67 west of town and ends at Exit 261 on I-10, US 67, and US 385 east of town. Although TxDOT certifies the length of the road as 1.4 miles (2.3 km), that length does not include a portion of the route concurrent with other highways. These sections brings the total length of the road to 4.4 miles (7.1 km).[41] Between its termini, the route has major intersections with US 285, US 385, SH 18, and FM 1053.[42]

Bus. I-10-G was formerly designated as part of US 290.[40]

Major intersections

The entire route is in Fort Stockton, Pecos County.

mi[41]kmDestinationsNotes
0.00.0   I-10 / US 67 – Balmorhea, El Paso, AlpineWestern terminus
1.52.4  US 285 north – PecosBegin overlay with US 285
2.23.5  SH 18 (N. Front St.) – Monahans
2.43.9  US 385 south (N. Jackson St.) – MarathonBegin overlay with US 385
2.54.0  FM 1053 (N. Main St.) – Imperial
2.94.7  US 285 south (N. Alamo St.) – SandersonEnd overlay with US 285
4.47.1    I-10 / US 67 / US 385 north – Bakersfield, San Antonio, McCameyEastern terminus, end overlay with US 385
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See alsoEdit

ReferencesEdit

  1. ^ Division of Design (May 7, 2012). "Highway Design Manual, Chapter 20, Index 21.2" (PDF). California Department of Transportation. p. 3. Retrieved September 9, 2014.
  2. ^ a b c Google (September 6, 2014). "Overview of I-10 Bus., Blythe, CA" (Map). Google Maps. Google. Retrieved September 6, 2014.
  3. ^ "Southeastern California" (Map). California Official Highway Map (PDF). Cartography by H.M. Gousha. California State Department of Public Works. 1966. Retrieved September 8, 2014.
  4. ^ a b c d e f g h i Staff (December 31, 2012). "2012 State Highway System Log" (PDF). Arizona Department of Transportation, Multimodal Planning Division, Roadway Inventory Management Section. Retrieved September 3, 2014.
  5. ^ a b c d e f g h i j Staff (December 31, 2008). "2008 State Highway System Log" (PDF). Arizona Department of Transportation, Multimodal Planning Division, Data Bureau. Retrieved September 3, 2014.
  6. ^ State Highway Department Road Map of Arizona (PDF) (Map). 1"=24 mi. Cartography by Rand McNally & Company. Arizona Highway Commission. 1961. p. 3. § F2. Retrieved September 7, 2014.
  7. ^ a b "Interstate-Guide: Business Route 10". AARoads' Interstate Guide. interstate-guide.com. October 21, 2013. Retrieved May 8, 2015. Alan Hamilton
  8. ^ a b c d e f g Arizona Department of Transportation (1998). "1998 State Highway System Log" (PDF). Phoenix: Arizona Department of Transportation. Retrieved October 18, 2018.
  9. ^ Staff. "ADOT Right-of-Way Resolution 1972-P-082". Arizona Department of Transportation. Retrieved October 18, 2018.
  10. ^ Staff. "ADOT Right-of-Way Resolution 2001-8-A-060". Arizona Department of Transportation. Retrieved October 18, 2018.
  11. ^ State Highway Department Road Map of Arizona (JPG) (Map). Cartography by Rand McNally & Company. Arizona Highway Commission. 1961. p. 5. Tucson inset. Retrieved October 18, 2018.
  12. ^ Staff. "ADOT Right-of-Way Resolution 2001-8-A-060". Arizona Department of Transportation. Retrieved October 18, 2018.
  13. ^ Arizona Department of Transportation. "ADOT Right-of-Way Resolution 1974-P-060". Arizona Department of Transportation. Retrieved October 18, 2018.
  14. ^ "Historic Arizona U.S. Route 80 Designation". Tucson Historic Preservation Foundation. August 2017. Retrieved August 23, 2018.
  15. ^ State Highway Department Road Map of Arizona (PDF) (Map). 1"=24 mi. Cartography by Rand McNally & Company. Arizona Highway Commission. 1961. p. 4. § I6. Retrieved September 7, 2014.
  16. ^ Arizona State Transportation Board Meeting Agenda (PDF) (Report). Show Low, Arizona: Arizona State Transportation Board. July 20, 2018. pp. 310 to 339. Retrieved June 16, 2019.
  17. ^ Staff. "ADOT Right-of-Way Resolution 1969-P-063". Arizona Department of Transportation. Retrieved June 19, 2019.
  18. ^ a b Staff. "ADOT Right-of-Way Resolution 1999-11-A-053". Arizona Department of Transportation. Retrieved June 19, 2019.
  19. ^ State Highway Department Road Map of Arizona (PDF) (Map). 1"=24 mi. Cartography by Rand McNally & Company. Arizona Highway Commission. 1961. p. 4. § I7. Retrieved September 7, 2014.
  20. ^ State Highway Department Road Map of Arizona (PDF) (Map). 1"=24 mi. Cartography by Rand McNally & Company. Arizona Highway Commission. 1961. p. 4. § H7. Retrieved September 7, 2014.
  21. ^ State Highway Department Road Map of Arizona (PDF) (Map). 1"=24 mi. Cartography by Rand McNally & Company. Arizona Highway Commission. 1961. p. 4. § I8. Retrieved September 7, 2014.
  22. ^ a b Staff (March 16, 2010). "Posted Route–Legal Description; Business Loops" (PDF). New Mexico Department of Transportation, Data Management Bureau. p. 3. Retrieved September 3, 2014.
  23. ^ Google (September 3, 2014). "Overview of Loop 21" (Map). Google Maps. Google. Retrieved September 3, 2014.
  24. ^ a b c d Staff (March 27, 2014). "TIMS Road Segments by Posted Route/Point with AADT Info; BL, I, ICR, IX-Routes" (PDF). New Mexico Department of Transportation, Data Management Bureau. Archived from the original (PDF) on September 3, 2014. Retrieved September 3, 2014.
  25. ^ Official Road Map of New Mexico (PDF) (Map). Cartography by Rand McNally & Co. New Mexico State Highway Department. 1973. § J1. Retrieved September 7, 2014.
  26. ^ Google (September 3, 2014). "Overview of Loop 22" (Map). Google Maps. Google. Retrieved September 3, 2014.
  27. ^ Official Road Map of New Mexico (PDF) (Map). New Mexico State Highway Department. 1967. § J3. Retrieved September 7, 2014.
  28. ^ a b Transportation Planning and Programming Division. "Business Interstate Highway No. 10-C" Archived October 10, 2012, at the Wayback Machine. Highway Designation Files. Texas Department of Transportation. Retrieved September 7, 2014
  29. ^ a b Google (September 6, 2014). "Overview of Bus.I-10-C" (Map). Google Maps. Google. Retrieved September 6, 2014.
  30. ^ Transportation Planning and Programming Division (2014). Texas County Mapbook (PDF) (Map) (2014 ed.). 1:120,000. Texas Department of Transportation. p. 15. Retrieved December 3, 2014.
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