Business routes of Interstate 25

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 These roads typically follow along local streets often along a former U.S. route or state highway that had been replaced by an Interstate.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 25
Highway system

Along Interstate 25 (I-25), business routes are found in all three states through which I-25 passes: New Mexico, Colorado, and Wyoming. 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. Every state along I-25 regards its business routes as fully incorporated members of their respective state maintained highway systems.

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.

New Mexico

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. I-25 begins with a business route through Williamsburg and Truth or Consequences before proceeding northward with additional routes serving the towns of Socorro, Belen, Las Vegas, Springer, and Raton. These routes largely conform to the current or former alignment of the unsigned U.S. Route 85 (US 85) through these communities before the construction of I-25. NMDOT has decommissioned US 85 throughout the state and no longer signs the highway along its length as US 85 entirely follows I-25 with the single exception of the business loop in Las Vegas. The American Association of State Highway and Transportation Officials (AASHTO), however, continues to recognize the New Mexico portion of US 85 maintaining continuity with sections in adjacent states.

Williamsburg – Truth or Consequences

Business Loop 11
LocationWilliamsburg – Truth or Consequences
Length5.711 mi[1]:1 (9.191 km)

Business Loop 11 is a 5.7-mile (9.2 km) business loop serving the cities of Williamsburg and Truth or Consequences in Sierra County. The loop begins at Exit 75 of I-25 in Williamsburg, intersecting State Road 187 (NM 187), traveling northeast on Broadway Street through Truth or Consequences until meeting Main Avenue. Between that point and Date Street, the route follows two one way roads with Broadway carrying northbound traffic and Main conveying traffic to the south. The routes combine and turn north on Date, intersecting the western terminus of NM 51. Turning northwest, the highway intersects NM 181 and terminates at Exit 79 on I-25 on the north side of Truth or Consequences.[2]:1[3]

Most of the loop, with the exception of its I-25 interchanges, was previously part of US 85 which joined the route from the south at NM 187[4]:43 and departed to the north along NM 181.[4]:42

Major intersections

The entire route is in Sierra County.

Locationmi[2]:1kmDestinationsNotes
Williamsburg0.0000.000 I-25 / US 85 – Las Cruces, AlbuquerqueSouthern terminus
0.4150.668 NM 187 southNorthern terminus of NM 187
Truth or Consequences3.5925.781 NM 51 east (Third Ave.) – Elephant Butte, EngleWestern terminus of NM 51
4.8487.802 NM 181 north – Elephant Butte State ParkSouthern terminus of NM 181
5.7119.191 I-25 / US 85 – Las Cruces, AlbuquerqueNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Socorro

Business Loop 12
LocationSocorro
Length2.879 mi[1]:1 (4.633 km)

I-25 Business (I-25 Bus.) is a 2.9-mile (4.7 km) business loop serving the city of Socorro in Socorro County. The loop begins at exit 147 of I-25 and travels northwest along California Avenue until an intersection with the northern terminus of NM 1. The loop turns north as a divided highway as it enters the city. US 60 intersects from the west, and the loop becomes concurrent with US 60 as the pair of highways continue to the north. The loop terminates at exit 150 on I-25, and US 60 continues along the Interstate as it exits Socorro.[2]:1[5]

Major intersections

The entire route is in Socorro, Socorro County.

mi[2]:1kmDestinationsNotes
0.0000.000 I-25 / US 85 – Las Cruces, AlbuquerqueSouthern terminus
0.3660.589 NM 1 southNorthern terminus of NM 1
1.0551.698 US 60 west (Spring St.) – VLASouthern end of US 60 concurrency
2.8794.633 I-25 / US 60 east / US 85 – Las Cruces, AlbuquerqueNorthern terminus; northern end of US 60 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Belen

Business Loop 13
LocationBelen
Length6.645 mi[1]:1 (10.694 km)

Business Loop 13 is a 6.6-mile (10.6 km) business loop serving the city of Belen in Valencia County. The loop begins at Exit 190 on I-25 and intersects the northern terminus of NM 116 as the highway travels north along Main Street into the city. The western terminus of NM 309 is met in central Belen. The loop continues north to NM 314 then turns northwest before terminating at Exit 195 on I-25.[2]:1–2[6]

Major intersections

The entire route is in Belen, Valencia County.

mi[2]:1–2kmDestinationsNotes
0.0000.000 I-25 / US 85 – Socorro, AlbuquerqueSouthern terminus
0.7001.127 NM 116 southNorthern terminus of NM 116
2.3103.718 NM 309 east (Reinken Ave.)Western terminus of NM 309
4.6057.411 NM 314 north – Los LunasSouthern terminus of NM 314
6.64510.694 I-25 / US 85 – Socorro, AlbuquerqueNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Las Vegas

Business Loop 15
LocationLas Vegas
Length4.240 mi[1]:2 (6.824 km)

Business Loop 15 is a 4.240-mile (6.824 km) business loop serving Las Vegas in San Miguel County. The loop begins at Exit 343 of I-25 and travels northeast intersecting NM 329. The loop continues north passing to the west of the Las Vegas Intermodal Facility served by the Southwest Chief line of Amtrak just south of the intersection with NM 104. Continuing north, the highway passes east of Municipal Park before terminating at NM 250 and I-25 at Exit 347.[2]:2–3[7]

Uniquely among the I-25 business routes, the Las Vegas segment remains as the only recognized portion of US 85 within the state that has not relocated to I-25.[8]

Major intersections

The entire route is in Las Vegas, San Miguel County.

mi[2]:2–3kmDestinationsNotes
0.0000.000 I-25 / US 85 south – Santa Fe, RatonSouthern terminus; begin overlay of US 85
0.3410.549 NM 329 north (New Mexico Ave.)Southern terminus of NM 329
2.1173.407 NM 104 east (University Ave.) – TucumcariWestern terminus of NM 104
4.2406.824 I-25 / US 85 north / NM 250 north – Santa Fe, Raton, Las Vegas Municipal AirportSouthern terminus; end overlay of US 85; roadway continues as NM 250; southern terminus of NM 250
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Springer
Business Loop 16
LocationSpringer
Length3.430 mi[1]:2 (5.520 km)

Business Loop 16 is an unsigned 3.4-mile (5.5 km) business loop serving the city of Springer in Colfax County. The loop begins at Exit 412 of I-25 and travels northeast along Railroad Avenue. The loop serves as the main north-south road in the town, and intersects Fourth Street which to the west of the loop is NM 21 and to the east is US 56 and US 412. Continuing northwest, the loop intersects NM 468 and then runs closely parallel to the Interstate before merging at Exit 414.[2]:3[9]

Major intersections

The entire route is in Colfax County.

Locationmi[2]:3kmDestinationsNotes
​0.0000.000 I-25 (US 85) – Las Vegas, RatonSouthern terminus; I-25 exit 412
Springer1.2582.025 US 56 / US 412 east (Fourth Street east) / NM 21 west (Fourth Street west) – Miami, ClaytonWestern termini of US 56 and US 412; eastern terminus of NM 21
1.8272.940 NM 468 west – Springer Correctional Facility, Lake SpringerEastern terminus of NM 468
​3.4305.520 I-25 (US 85) – RatonNorthern terminus; I-25 exit 414
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Raton

Business Loop 17
LocationRaton
Length4.161 mi[1]:2 (6.696 km)

Business Loop 17 is a 4.2-mile (6.8 km) business loop that begins at Exit 450 on I-25 south of Raton in Colfax County concurrent with US 64. The two highways intersect NM 555 then pass east of La Mesa Park traveling along Second Street north into the city. Clayton Road takes US 64 off of the loop to the east as the loop continues north crossing over the rail line that serves the Raton Amtrak Station before turning northwest and terminating at Exit 454 on I-25.[2]:4[10]

Major intersections

The entire route is in Colfax County.

Locationmi[2]:4kmDestinationsNotes
Raton0.0000.000 I-25 / US 64 west / US 85 – Springer, Trinidad, COSouthern terminus; begin overlay of US 64
0.4400.708 NM 555 west (York Canyon Rd.)Eastern terminus of NM 555
1.6272.618 US 64 east (Clayton Rd.) – Clayton, Amarillo, TXEnd overlay of US 64
​4.1616.696 I-25 / US 85 / US 87 – Springer, Trinidad, CONorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Colorado

All Interstate business routes are maintained by the Colorado Department of Transportation (CDOT). Within Colorado, all highways maintained by the state are classified as state highways including Interstates and U.S. routes which hold the same numerical designations as their nationally established routes. The numerical values of all state highway names are followed by an alphabetic suffix, although this convention is used by the department internally and not reflected in route signage. Hence, the mainline of Interstate 25 throughout the length of the state is classified as State Highway 25A while its two business routes in Aguilar and Walsenburg are internally named State Highway 25B and State Highway 25C respectively. US 85 and US 87 are hidden routes not recognized nor signed by CDOT in southern Colorado. They are, however, established AASHTO routes maintaining continuity with signed portions in other states along their routes. In southern Colorado, the routes primarily follow I-25 including at Aguilar but with deviations such as along the Walsenburg business route. In addition to these, US 160 joins I-25 at Walsenburg and follows concurrently with the Interstate to Trinidad including the portion bypassing Aguilar. Thus in Walsenburg, US 160 crosses the business route in the town center and again at the business route's southern terminus.

Aguilar

State Highway 25B
LocationAguilar
Length1.981 mi[11] (3.188 km)

State Highway 25B is a business spur of I-25 connecting the town of Aguilar in Las Animas County to the Interstate. The 2.0-mile (3.2 km) route begins at the corner of Main Street and First Street in Aguilar. The spur proceeds for one block north along N. First St. before turning to the northwest along Lynn Rd. away from town. The route turns east along County Road 60 immediately before terminating at I-25 Exit 34.[11][12]

Major intersections

The entire route is in Las Animas County.

Locationmi[11]kmDestinationsNotes
Aguilar0.0000.000Main St. / S. First St.Western terminus; roadway continues south as S. First St.
​1.9813.188 I-25 / US 85 / US 87 / US 160 – Trinidad, PuebloEastern terminus; roadway continues east as County Rd. 60
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Walsenburg

State Highway 25C
LocationWalsenburg
Length4.356 mi[13] (7.010 km)

State Highway 25C is a business loop of I-25 serving the town of Walsenburg in Huerfano County. The route 4.4-mile (7.1 km) begins at I-25 Exit 49 and proceeds to the west along the southern edge of Walsenburg. The route then turns to the northwest along Walsen Avenue. At Seventh Street, US 160 intersects from the west. US 160 runs concurrently with the loop until US 160 turns off to the east along Fifth Street to I-25. The loop then continues northeast along Walsen Ave. leaving town and intersects State Highway 69 (SH 69) before terminating at I-25 Exit 52.[13][14]

CDOT does not recognize or sign US 85 in the southernmost part of its route within the state, nor does it recognize US 87 anywhere within Colorado as they are redundant with other routes in the state highway system.[15] The highways remain established by AASHTO primarily along I-25 in southern Colorado and along Walsenburg's I-25 business route.[8]

Major intersections

The entire route is in Huerfano County.

Locationmi[13]kmDestinationsNotes
Walsenburg0.0000.000 I-25 / US 85 south / US 87 south / US 160 – Trinidad, PuebloSouthern terminus; begin overlay of US 85 / US 87
1.3972.248 US 160 west (Seventh St.) – AlamosaBegin overlay of US 160
1.5422.482 US 160 east (Fifth St.)End overlay of US 160
​3.6695.905 SH 69 west – WestcliffeEastern terminus of SH 69
​4.3567.010 I-25 / US 85 north / US 87 north – Trinidad, PuebloNorthern terminus; end overlay of US 85 / US 87
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Wyoming

All business routes of Interstate 25 are maintained by the Wyoming Department of Transportation (WyDOT). Wyoming has no naming convention for disambiguation between different business routes with all designated simply as I-25 Business along the Interstate. I-25 has seven business routes within the state. Road concurrences are frequent in Wyoming, and the seven business highways often overlay multiple other highways, including U.S. Route 87 Business, wholly or partly at most of these seven locations, as US 87 largely follows I-25 throughout the state.

Cheyenne

Interstate 25 Business
Locationsee below

U.S. Highway 87 Business
LocationCheyenne
Length8.006 mi[16]:101–102 (12.884 km)

Interstate 25 Business and U.S. Route 87 Business are business loops serving the city of Cheyenne in Laramie County. The 8.0-mile (12.9 km) multiplexed highway begins at exit 7 of I-25 and US 87 and is routed along Wyoming Highway 212 (WYO 212) and is named College Drive. At just over two and a half miles (4.0 km), US 85 is intersected. Here, I-25 Bus. leaves WYO 212 and turns north onto US 85 and will remained paired with it until its end. I-25 Bus. and US 85 enter Cheyenne from the south and intersect I-80 at Exit 362. At this point, I-180 begins. Despite the Interstate designation, the I-180 portion is not a freeway. The I-180 concurrency only lasts for just over one mile as I-180 ends at I-80 Bus. / US 30 along Lincolnway. I-25 Bus. continues north with US 85 and US 87 Bus. now as a one-way couplet through central Cheyenne northbound as Warren Avenue and southbound as Central Avenue. Near the Cheyenne Regional Airport, the one-way streets combine and continue as Central Ave. before intersecting the southern terminus of WYO 219 at Yellowstone Road. I-25 Bus. and US 87 Bus. terminate at exit 12 of I-25 / US 87. Here US 85 joins those routes northbound.[16][17]

Major intersections

The entire route is in Laramie County.

Locationmi[16]:101–102kmDestinationsNotes
​0.0000.000 I-25 (US 87) – Ft. Collins
WYO 212 begins		Braided interchange; southern terminus of I-25 Bus./US 87 Bus.; exit 7 on I-25; south end of WYO 212 concurrency; road continues as Clear Creek Parkway
South Greeley2.7054.353 US 85 south (South Greeley Highway south) / WYO 212 east (College Drive east) – Greeley, Laramie County Community CollegeNorth end of WYO 212 concurrency; south end of US 85 concurrency
Cheyenne3.8986.273 I-80 to US 30 west – Rock Springs, Sidney
I-180 begins		South end of I-180 concurrency; exit 362 on I-80
See I-180
5.1388.269 I-180 ends I-80 Bus. / US 30 (Lincolnway)North end of I-180 concurrency
7.18811.568 WYO 219 (Yellowstone Road)Southern terminus of WYO 219
8.00612.884 US 85 north / I-25 / US 87 / Central Avenue (WYO 224) – Fort Collins, Torrington, Casper, Wyoming Department of Transportation, Game and Fish, Warren AFB, National GuardNorthern terminus of I-25 Bus./US 87 Bus.; exit 12 on I-25; north end of US 85 concurrency; road continues west as Central Ave. (WYO 224)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Chugwater
Main article: Wyoming Highway 321

Wyoming Highway 321
LocationChugwater
Length3.28 mi[18] (5.28 km)

Interstate 25 Business is a business route signed as Wyoming Highway 321 and serving the Town of Chugwater in southeastern Platte County, Wyoming. The highway begins at exit 54 of I-25/US 87. At this interchange lies the northern terminus of Wyoming Highway 211. Here I-25 Business travels east past the Chugwater rest area. At six-tenths of a mile is the western terminus of Wyoming Highway 313. Less than three miles later, I-25 Bus. (WYO 321) reaches I-25/US 87 at exit 57, where they both end.[18] WYO 321 is signed from the freeway as I-25 Business, and serves as a de facto business route, however I-25 business is not signed anywhere along WYO 321.[19]

Wheatland

Interstate 25 Business
Locationsee below

U.S. Highway 87 Business
LocationWheatland
Length2.95 mi[20] (4.75 km)

Interstate 25 Business and U.S. Route 87 Business are business loops serving the Town of Wheatland in central Platte County, Wyoming. Interstate 25 Bus. runs concurrent with US 87 Bus. for its entire length. I-25 Business begins at exit 78 of I-25/US 87. Here I-25 Business begins on a short section of Mariposa Parkway but then turns north onto S. Wheatland Highway for a third of a mile. Wyoming Highway 310 and Wyoming Highway 312 are then intersected as the business route turns east along South Street. A half-a mile later, the business route turns north, now onto 9th Street and intersects Wyoming Highway 316 (Antelope Gap Road) shortly after. Further north, the southern terminus of Wyoming Highway 320 is intersected as the business loop becomes S. Swanson Road. At 2.95 miles, I-25 Business meets I-25/US 87 at exit 80 where it ends.[20][21][22]

Douglas

Interstate 25 Business
Locationsee below


U.S. Route 20 Business/U.S. Route 26 Business/U.S. Route 87 Business
LocationDouglas
Length4.966 mi[16]:65 (7.992 km)
Center Street - Douglas, WY

Interstate 25 Business, U.S. Route 20 Business, U.S. Route 26 Business, and U.S. Route 87 Business are business loops serving the town of Douglas in southern Converse County. The 5.0-mile (8.0 km) I-25 Business loop runs concurrently with US 20 Bus., US 26 Bus., and US 87 Bus. for its entire length. I-25 Bus. begins at exit 135 of I-25 / US 20 / US 26/ US 87 southeast of Douglas. The loop follows E. Richards Street into Douglas. At S. Fourth Street, the loop turn north through Douglas. A mile later, the loop turn west onto Center Street, which becomes Yellowstone Highway. Near its end, the northern terminus of WYO 94 and the southern terminus of WYO 59 are intersected at Riverbend Drive. Past that intersection, the business routes rejoin I-25 / US 20/ US 26 / US 87 at exit 140.[16]:65[23]

Major intersections

The entire route is in Converse County.

Locationmi[16]:65kmDestinationsNotes
​0.0000.000 I-25 / US 20 / US 26 / US 87 – Cheyenne, CasperSouthern terminus of I-25 Bus./US 87 Bus., eastern terminus of US 20 Bus./US 26 Bus.; exit 135 on I-25
Douglas4.5997.401 WYO 59 north / WYO 94 south (Riverbend Drive) to WYO 91 – Gillette, Esterbrook, Law Enforcement Academy, Eastern Wyoming College Douglas CampusSouthern terminus of WYO 59; northern terminus of WYO 94
4.9667.992 I-25 / US 20 / US 26 / US 87 – Cheyenne, CasperNorthern terminus of I-25 Bus./US 87 Bus., western terminus of US 20 Bus./US 26 Bus.; exit 140 on I-25
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Glenrock

Interstate 25 Business
LocationGlenrock
Length6.98 mi[24] (11.23 km)

Interstate 25 Business is a business route serving the Town of Glenrock in Converse County, Wyoming. I-25 Business begins at exit 165 of I-25. The business route travels north, concurrent with Wyoming Highway 95, into Glenrock on Deer Creek Road and then S. 4th Street. At approximately two miles, I-25 Bus./WYO 95 intersects US 20/US 26/US 87. Here I-25 Bus turns east onto Birch Street to travel with US 20/US 26/US 87 for the remainder of its route, while WYO 95 turns west onto Birch St. I-25 Bus. continues east out of Glenrock, intersecting the northern terminus of Wyoming Highway 90 (Boxelder Road), before reaching its eastern end at exit 160 of I-25. US 20/US 26/US 87 join I-25 eastward.[24][25]

Casper

Interstate 25 Business
LocationCasper
Length2.180 mi[16]:115–116 (3.508 km)

Interstate 25 Business is a business loop serving the city of Casper in eastern Natrona County. The 2.2-mile (3.5 km) loop begins at exit 188A of I-25, heading south on Center Street along with US 20 Bus. and unsigned WYO 255. The loop turns left onto 1st Street where it joins US 20 Bus. and US 26 Bus.. WYO 251 intersects the loop from the south along Wolcott and Durbin Streets before US 20, US 26, and US 87 depart on Yellowstone Highway and their respective business routes end. There, I-25 Bus. turns north along Bryan Stock Trail, where eastbound US 20 / US 26 and southbound US 87 are concurrent with I-25 Bus. westbound. The loop ends at exit 186 of I-25.[16]:115–116[26]

Major intersections

The entire route is in Casper, Natrona County.

mi[16]:115–116kmDestinationsNotes
0.0000.000 WYO 255 begins / I-25 / US 20 / US 26 / US 87 – Buffalo, Shoshoni, CheyenneWestern termini of I-25 Bus. and US 87 Bus.; northern terminus of unsigned WYO 255; exit 188A on I-25; road continues north as Center Street
0.4800.772
US 20 Bus. / US 26 Bus. west (1st Street west) / WYO 255 ends		West end of US 20 Bus./US 26 Bus. concurrency; east end of unsigned WYO 255 concurrency
0.5460.879Wolcott Street (WYO 251 south)One-way street, outbound access only
Durbin Street (WYO 251)One-way street, inbound access only
2.1303.428
US 20 / US 26 east / US 87 south (Yellowstone Highway east) / US 20 Bus. / US 26 Bus. / US 87 Bus. end		Eastern terminus of US 20 Bus./US 26 Bus./US 87 Bus.; east end of US 20 Bus./US 26 Bus./US 87 Bus. concurrency
2.1803.508 I-25 / US 87 north / US 20 / US 26 west – Buffalo, ShoshoniEastern terminus; east end of westbound concurrency with US 20/US 26/US 87; exit 186 on I-25; road continues north as Bryan Stock Trail; access to I-25 south via US 20/US 26 east/US 87 south (Yellowstone Hwy. east)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Buffalo

Interstate 25 Business
LocationBuffalo
Length1.673 mi[16]:94 (2.692 km)

Interstate 25 Business is a business spur serving the city of Buffalo in Johnson County that runs concurrently with US 87 Bus.. The 1.7-mile (2.7 km) spur begins at Exit 298 of I-25 / US 87 south of Buffalo. I-25 Bus intersects WYO 196 a half-mile into its route as it follows Main Street into Buffalo. One mile later, US 16 joins the spur at Fort Street. US 16 has a short half-mile concurrency with the spur until Hart Street where it turns east along I-90 Bus. where I-25 Bus. terminates. I-90 Bus. approaches the intersection from the north along the northern extension of US 87 Bus.[16]:94[27]

Major intersections

The entire route is in Johnson County.

Locationmi[16]:94kmDestinationsNotes
​0.0000.000
US 87 Bus. begins / I-25 / US 87 to I-90 – Gillette, Sheridan, Casper		Southern termini of I-25 Bus. and US 87 Bus.; south end of US 87 Bus. concurrency
Buffalo0.4260.686 WYO 196Northern terminus of WYO 196
1.2562.021 US 16 west (Fort Street) – Worland, YellowstoneSouth end of US 16 concurrency
1.6732.692 US 16 east (I-90 Bus. east) to I-25 / I-90 / Main Street north (I-90 Bus. west / US 87 Bus. north)Northern terminus; north end of US 16/US 87 Bus. concurrency; highway continues north as Main St. (I-90 Bus. west/US 87 Bus. north)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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See also
  •  U.S. Roads portal
  •  Colorado portal

References
  1. Staff, Data Management Bureau (March 16, 2010). "Posted Route–Legal Description; Business Loops" (PDF). New Mexico Department of Transportation. Retrieved September 10, 2014.
  2. Staff, Data Management Bureau (March 27, 2014). "TIMS Road Segments by Posted Route/Point with AADT Info; BL, I, ICR, IX-Routes" (PDF). New Mexico Department of Transportation. Archived from the original (PDF) on September 3, 2014. Retrieved September 10, 2014.
  3. Google (September 11, 2014). "Overview of Business Loop 11" (Map). Google Maps. Google. Retrieved September 11, 2014.
  4. Staff, Data Management Bureau (March 16, 2010). "Posted Route–Legal Description; New Mexico Routes Sorted by Routes" (PDF). New Mexico Department of Transportation. Retrieved September 14, 2014.
  5. Google (September 11, 2014). "Overview of Business Loop 12" (Map). Google Maps. Google. Retrieved September 11, 2014.
  6. Google (September 12, 2014). "Overview of Business Loop 13" (Map). Google Maps. Google. Retrieved September 12, 2014.
  7. Google (September 12, 2014). "Overview of Business Loop 15" (Map). Google Maps. Google. Retrieved September 12, 2014.
  8. Staff, Special Committee on U.S. Route Numbering (December 2009). "U.S. Route Number Database". American Association of State Highway and Transportation Officials. Archived from the original on July 14, 2011. Retrieved September 14, 2014.
  9. Microsoft; Nokia (September 12, 2014). "Overview of Business Loop 16" (Map). Bing Maps. Microsoft. Retrieved September 12, 2014.
  10. Google (September 12, 2014). "Overview of Business Loop 17" (Map). Google Maps. Google. Retrieved September 12, 2014.
  11. Staff, Online Transportation Information System. "Highway 025B between 0 and 1.948". Colorado Department of Transportation. Archived from the original on 2012-09-10. Retrieved September 15, 2014.
  12. Google (September 15, 2014). "Overview of State Highway 25B" (Map). Google Maps. Google. Retrieved September 15, 2014.
  13. Staff, Online Transportation Information System. "Highway 025C between 0 and 4.039". Colorado Department of Transportation. Archived from the original on 2012-09-10. Retrieved September 15, 2014.
  14. Google (September 15, 2014). "Overview of SH 25C" (Map). Google Maps. Google. Retrieved September 15, 2014.
  15. Staff, Online Transportation Information System. "Highway Data Explorer". Colorado Department of Transportation. Missing or empty |url= (help)
  16. Maintenance Staff (February 15, 2013). "2013 Maintenance Section Reference Book" (PDF). Wyoming Department of Transportation. Retrieved September 17, 2014.
  17. Google (September 21, 2014). "Overview of I-25 Bus. in Cheyenne" (Map). Google Maps. Google. Retrieved September 21, 2014.
  18. Overview Map of I-25 Business (Chugwater) (Map). Yahoo Maps. Retrieved 2011-04-10.
  19. WYO 321/I-25 Business - Chugwater
  20. Overview Map of I-25 Business (Wheatland) (Map). Yahoo Maps. Retrieved 2011-04-10.
  21. Wyoming Department of Transportation Reference Marker Book - November 2004 (PDF) (Map). WYDOT. Archived from the original (PDF) on 2011-07-17. Retrieved 2011-04-14.
  23. Google (September 22, 2014). "Overview of I-25 Bus. in Douglas" (Map). Google Maps. Google. Retrieved September 22, 2014.
  24. Overview Map of I-25 Business (Glenrock) (Map). Yahoo Maps. Retrieved 2011-04-15.
  26. Google (September 23, 2014). "Overview of I-25 Bus. in Casper" (Map). Google Maps. Google. Retrieved September 23, 2014.
  27. Google (September 22, 2014). "Overview of I-25 Bus. in Buffalo" (Map). Google Maps. Google. Retrieved September 22, 2014.
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