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Interstate 25

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"I-25" redirects here. For the Japanese Navy submarine, see I-25 (submarine).
Interstate 25 marker
Interstate 25
Route information
Length1,062.77 mi[1] (1,710.36 km)
NHSEntire route
Major junctions
South end I-10 / US 85 / US 180 near Las Cruces, NM
Major intersections
North end I-90 / US 87 in Buffalo, WY
Location
CountryUnited States
StatesNew Mexico, Colorado, Wyoming
Highway system

Interstate 25 (I-25) is a major interstate highway in the western United States. It is primarily a north–south highway, serving as the main route through New Mexico, Colorado, and Wyoming. I-25 stretches from Interstate 10 at Las Cruces, New Mexico (approximately 25 miles (40 km) north of El Paso, Texas), to Interstate 90 in Buffalo, Wyoming (approximately 60 miles (97 km) south of the Montana–Wyoming border).[2] It passes through or near Las Cruces, New Mexico; Truth or Consequences, New Mexico; Socorro, New Mexico; Albuquerque, New Mexico; Santa Fe, New Mexico; Las Vegas, New Mexico; Raton, New Mexico; Pueblo, Colorado; Colorado Springs, Colorado; Denver, Colorado; Fort Collins, Colorado; Cheyenne, Wyoming; and Casper, Wyoming. The I-25 corridor is mainly rural, especially in Wyoming, excluding the Albuquerque, Pueblo, Colorado Springs, and Denver areas.

The part of I-25 in Colorado passes just east of the Front Range of the Rocky Mountains. That stretch was involved in a large-scale renovation named the Transportation Expansion Project[3] (TRansportation EXpansion) in Denver, and the COSMIX[4] (Colorado Springs Metropolitan Interstate Expansion). These projects and others in New Mexico were necessary because these stretches of I-25 were originally inadequately designed and constructed (the pavement was deteriorating rapidly), and also because urban areas like Albuquerque, Colorado Springs, and Denver had tripled and quadrupled in population much earlier than anyone had anticipated back in the 1950s and 1960s. Major highway work for the T-REX project ended on August 22, 2006. The COSMIX project was completed in December 2007. Several other smaller improvement projects for I-25 are still ongoing within New Mexico and Colorado.

Route description

Lengths
  mi[1] km
NM 462.12 744.15
CO 305.04 490.91
WY 300.95 484.62
Total 1,068.11 1,719.68

New Mexico

At the Big I in Albuquerque, New Mexico
Main article: Interstate 25 in New Mexico

I-25 begins at Interstate 10's exit 144 in Las Cruces, just south of the New Mexico State University campus.[5] I-25 is concurrent with U.S. Route 85 at this point, and carries this concurrency for the entire length of its run in New Mexico. Immediately, three exits provide access to the city, including one for U.S. Route 70.[6] When I-25 reaches Truth or Consequences, it is parallel to Elephant Butte Lake State Park.[7] From Las Cruces to Santa Fe I-25 follows the route of El Camino Real de Tierra Adentro.[8]

As I-25 nears Albuquerque, it has interchanges with highways such as U.S. Route 380 and a concurrency with US 60.[9] Further north, State Road 6, former U.S. Route 66, meets up with I-25 in Los Lunas.[10] Through Albuquerque I-25 is named the Pan American Freeway and there are frequent exits to city streets.[11][12]: 248  A major interchange with Interstate 40 (which is styled as the Coronado Freeway in the city) is named the Big I.[12]: 248 [13] It was given an honorable mention by the United States Department of Transportation and the Federal Highway Administration for excellence in urban highway design in 2002.[14]

Leaving Albuquerque to the north, I-25 curves to the northeast as it approaches Santa Fe.[15] Continuing 'northbound' at Santa Fe, I-25 heads southeast for approximately 45 miles (72 km) traveling through the Santa Fe National Forest and crossing Glorieta Pass (elevation 7,452 feet (2,271 m)).[16] It turns north again at Blanchard toward Las Vegas.[17] The highway maintains a north and northeast orientation as it leaves New Mexico traversing Raton Pass (7,798 feet (2,377 m)[18]) and enters Colorado. From Santa Fe to Trinidad, Colorado I-25 approximates part of the route of the Santa Fe Trail.[19] For its entire length in the state, I-25 shares its alignment with US-85, although US-85 is unsigned.

Colorado

Main article: Interstate 25 in Colorado
Rush hour on I-25 through downtown Denver

Interstate 25 has many nicknames through the state's larger cities. In Denver it is called the Valley Highway, as the highway parallels the course of the South Platte River throughout the downtown area and is often sunken below ground level. The section in El Paso County is named the Ronald Reagan Highway, and through Pueblo it is named the John F. Kennedy Memorial Highway.

John F. Kennedy Memorial Highway in scenic southern Colorado

I-25 enters Colorado 14 miles (23 km) south of the city of Trinidad. It is the main north–south route through Colorado with a length of 300 miles (480 km). The Interstate exits Colorado in the north about 8 miles (13 km) south of Cheyenne, Wyoming. I-25 serves all the major cities in Colorado that are east of the Rocky Mountains, such as Denver, Colorado Springs, Pueblo, Fort Collins, and Greeley. For the entire distance in Colorado, from the north to the south, the Rocky Mountains are clearly visible.

There are also several important military and air bases and institutions along this route, such as Buckley Air Force Base, the Cheyenne Mountain Complex headquarters of NORAD, Fort Carson, Peterson Air Force Base, and the United States Air Force Academy.

I-25 crosses the Palmer Divide between Denver and Colorado Springs, providing some of the highway's most scenic views of the Rocky Mountains and its foothills. Blizzards and high winds on this stretch (particularly over Monument Hill) are notorious for causing traffic problems during the winter months.

The section of I-25 that is between the northern border of Pueblo County, Colorado, and the New Mexico state line is named the "John F. Kennedy Memorial Highway", in honor of President Kennedy's support of water resources development in the Arkansas River Valley.

Wyoming

Main article: Interstate 25 in Wyoming

I-25 enters Wyoming 8 miles (13 km) south of the state capital city, Cheyenne. After traveling through Cheyenne, Interstate 25 continues north to Douglas, Wyoming, passing many plateaus and also railroad tracks. Commonly, very long trains can be seen slowly moving alongside this highway. Around Douglas, this interstate highway curves somewhat to the west toward Casper. Once through Casper, I-25 turns due north, and it goes as far as Buffalo, Wyoming, where it ends at an intersection with Interstate 90. Then, Interstate 90 provides the connection to Montana.

History

The section between Romeroville, N.M., and Los Lunas, New Mexico, closely follows the original alignment of U.S. Highway 66, which was later shortened and realigned to run due west from Santa Rosa. Now, that has been replaced with Interstate 40.

Junction list

New Mexico
I-10 / US 85 / US 180 on the Las Cruces–University Park line. I-25/US 85 share an unsigned concurrency to Fountain, Colorado.
US 70 in Las Cruces
US 380 west of San Antonio
US 60 in Socorro. The highways travel concurrently to south-southwest of Abeytas.
I-40 in Albuquerque
US 550 in Bernalillo
US 84 / US 285 south of Santa Fe. I-25/US 84 travels concurrently to Romeroville. I-25/US 285 travels concurrently to Eldorado at Santa Fe. These are wrong-way concurrencies; driving east, one is on I-25 North and US 84 and 285 South.
US 64 south of Raton. The highways travel concurrently to Raton.
US 64 / US 87 in Raton. I-25/US 87 travels concurrently to southeast of Glenrock, Wyoming.
Colorado
US 160 in Trinidad. The highways travel concurrently to Walsenburg.
US 50 in Pueblo. The highways travel concurrently through Pueblo.
US 24 in Colorado Springs. The highways travel concurrently through Colorado Springs.
US 85 in Colorado Springs
US 85 in Colorado Springs. The highways travel concurrently to Castle Rock.
I-225 in Denver
US 285 in Denver
US 85 in Denver. The highways travel concurrently through Denver.
US 6 in Denver. The highways travel concurrently through Denver.
US 40 / US 287 in Denver
I-70 / US 6 / US 85 in Denver
I-76 southeast of Twin Lakes
I-270 / US 36 on the Twin Lakes–Sherrelwood–Welby line
US 34 in Loveland
Wyoming
I-80 south-southwest of Cheyenne
US 30 southwest of Cheyenne
US 85 in Cheyenne. The highways travel concurrently to Ranchettes.
US 26 west-southwest of Dwyer Junction. The highways travel concurrently to southeast of Glenrock.
US 18 / US 20 in Orin. I-25/US 20 travels concurrently to southeast of Glenrock.
US 20 / US 26 / US 87 in Casper. I-25/US 20/US 26 travels concurrently to the Casper–Hartrandt city line. I-25/US 87 travels concurrently to north-northeast of Buffalo.
US 16 in Buffalo
I-90 / US 87 north-northeast of Buffalo

Auxiliary routes

References

  1. ^ a b Federal Highway Administration (October 31, 2002). "Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways as of October 31, 2002". Route Log and Finder List. Federal Highway Administration. Archived from the original on July 2, 2007. Retrieved July 7, 2007. {{cite web}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help)
  2. ^ "Overview Map of I-25" (Map). Google Maps. Retrieved February 15, 2008.
  3. ^ "Archived copy". Archived from the original on May 2, 2014. Retrieved July 2, 2005. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)CS1 maint: archived copy as title (link)
  4. ^ "COSMIX Project Home Page". Cosmixproject.com. Archived from the original on January 14, 2010. Retrieved November 27, 2011. {{cite web}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help)
  5. ^ "I-25 at I-10" (Map). Google Maps. Retrieved July 7, 2007.
  6. ^ "I-25 in Las Cruces" (Map). Google Maps. Retrieved July 7, 2007.
  7. ^ "I-25 parallels Elephant Butte Lake State Park" (Map). Google Maps. Retrieved July 7, 2007.
  8. ^ Wilkerson, Lyn (2003). American Trails Revisited: Following in the Footsteps of the Western Pioneers. Lincoln, NE: iUniverse. p. 154. ISBN 0595282628. Retrieved February 13, 2013 – via Google Books.
  9. ^ "I-25 near Albuquerque" (Map). Google Maps. Retrieved July 7, 2007.
  10. ^ "I-25 at SR 6" (Map). Google Maps. Retrieved July 7, 2007.
  11. ^ "I-25 exits in Albuquerque" (Map). Google Maps. Retrieved July 7, 2007.
  12. ^ a b Bryan, Howard (1989). Albuquerque Remembered. Albuquerque: University of New Mexico Press. ISBN 0826337821. OCLC 62109913. Retrieved February 13, 2013 – via Google Books.
  13. ^ "I-25 at I-40" (Map). Google Maps. Retrieved July 7, 2007.
  14. ^ "I-25/I-40 System-to-System Interchange". Excellence in highway design. Federal Highway Administration. 2002. Retrieved July 7, 2007.
  15. ^ "I-25 nearing Santa Fe" (Map). Google Maps. Retrieved July 7, 2007.
  16. ^ "Glorieta Pass". Santa Fe Trail National Scenic Byway. Santa Fe Trail Scenic Byway Profile. Retrieved February 13, 2013.
  17. ^ "I-25 near Las Vegas" (Map). Google Maps. Retrieved July 7, 2007.
  18. ^ "Raton Pass". National Historic Landmark summary listing. National Park Service. Archived from the original on June 6, 2011. Retrieved October 13, 2007. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  19. ^ Glassman, Steve (2008). It Happened on the Santa Fe Trail. Morris Publishing. p. ix. ISBN 0762745738. Retrieved February 13, 2013 – via Google Books.
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