Colorado

Colorado

Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...

's transportation network consists of a network of of highway, surface street, rail, and air transportation options. While the public transportation system in Denver is much more complex and developed than other parts of the state, tourism and growth have led to extensive needs statewide.

Overview

Colorado is a landlocked state, so ground and air transportation are the primary focus of the state. Also, due to low population density outside of the Denver and Colorado Springs metropolitan areas, highways are the primary transportation method for the majority of residents.

Interstate and US Highways

The main North/South route in Colorado is Interstate 25. The I-25 corridor follows the front range of the Colorado Rockies and connects Denver, Colorado Springs, Pueblo, Fort Collins, Greeley, Trinidad, and other small cities. Interstate 70 crosses Colorado from East to West and is a primary viaduct for tourists and locals to visit mountain communities. When it was completed, the section of I-70 passing through Glenwood Canyon was the most expensive section of Interstate highway ever built in the United States with a total cost of $490 million for 12 the 12 mile stretch.

Due to winter weather conditions, sections of I-70 are regularly closed during the winter and are expensive to maintain.

Interstates I-225 and I-270 provide connection though heavy traffic corridors in the Denver Area. I-76 connects the Denver area with Interstate 80

Interstate 80

Interstate 80 is the second-longest Interstate Highway in the United States, following Interstate 90. It is a transcontinental artery running from downtown San Francisco, California to Teaneck, New Jersey in the New York City Metropolitan Area...

 in Nebraska

Nebraska

Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River....

 to the Northeast.

Interstate 25 Interstate 25 Interstate 25 is an Interstate Highway in the western United States. It is primarily a north–south highway. I-25 stretches from Interstate 10 at Las Cruces, New Mexico, , to Interstate 90 in Buffalo, Wyoming, .Interstate 25 is the main north–south expressway through... Interstate 70 Interstate 70 Interstate 70 is an Interstate Highway in the United States that runs from Interstate 15 near Cove Fort, Utah, to a Park and Ride near Baltimore, Maryland. It was the first Interstate Highway project in the United States. I-70 approximately traces the path of U.S. Route 40 east of the Rocky... Interstate 76 Interstate 225 Interstate 270 Interstate 270 (Colorado) Interstate 270 is a long highway in the northeastern part of the Denver–Aurora Metropolitan Area in the U.S. state of Colorado. It overlaps U.S. Highway 36 for its entire length. The western terminus of I-270 is at the interchange with I-25 and US 36...

U.S. Route 6 U.S. Route 6 U.S. Route 6 , also called the Grand Army of the Republic Highway, a name that honors an American Civil War veterans association, is a main route of the U.S. Highway system, running east-northeast from Bishop, California to Provincetown, Massachusetts. Until 1964, it continued south from Bishop to... U.S. Route 24 U.S. Route 24 U.S. Route 24 is one of the original United States highways of 1926. It originally ran from Pontiac, Michigan, in the east to Kansas City, Missouri, in the west. Today, the highway's eastern terminus is west of Clarkston, Michigan, at an intersection with I-75 and its western terminus is near... U.S. Route 34 U.S. Route 34 U.S. Route 34 is an east–west United States highway that runs for 1,122 miles from north-central Colorado to the western suburbs of Chicago. Through Rocky Mountain National Park it is known as the Trail Ridge Road where it reaches 12,183 ft , making it the highest paved through highway in... U.S. Route 36 U.S. Route 36 U.S. Route 36 is an east–west United States highway that runs for from Rocky Mountain National Park, Colorado to Uhrichsville, Ohio. The highway's western terminus is at Deer Ridge Junction, an intersection in Rocky Mountain National Park, Colorado, where it meets U.S. Route 34. Its eastern... U.S. Route 40 U.S. Route 40 U.S. Route 40 is an east–west United States highway. As with most routes whose numbers end in a zero, U.S. 40 once traversed the entire United States. It is one of the original 1920s U.S. Highways, and its first termini were San Francisco, California, and Atlantic City, New Jersey... U.S. Route 50 U.S. Route 50 U.S. Route 50 is a major east–west route of the U.S. Highway system, stretching just over from Ocean City, Maryland on the Atlantic Ocean to West Sacramento, California. Until 1972, when it was replaced by Interstate Highways west of the Sacramento area, it extended to San Francisco, near...

U.S. Route 84 U.S. Route 84 U.S. Route 84 is an east–west United States highway. It started as a short Georgia-Alabama route in the original 1926 scheme, but now extends all the way to Colorado. The highway's eastern terminus is a short distance east of Midway, Georgia, at an intersection with I-95. The road continues... U.S. Route 85 U.S. Route 85 U.S. Route 85 is a north–south United States highway that runs for in the Mountain - Northern Plains states of the United States. The southern terminus of the route is at the United States-Mexico border in El Paso, Texas, connecting with Mexican Federal Highway 45... U.S. Route 87 U.S. Route 87 U.S. Highway 87 is a north–south United States highway that runs for 1,998 miles from northern Montana to southern Texas. Most of the portion from Billings, Montana, to Raton, New Mexico, is co-signed along Interstates 90 and 25... U.S. Route 138 U.S. Route 138 U.S. Route 138, commissioned in 1926, is a short east–west highway in Colorado and Nebraska that runs predominantly northeast to southwest paralleling the South Platte River and Interstate 76. Like all spurs of the former U.S. Route 66 and U.S. Route 199, U.S. Route 138 is an orphan route.... U.S. Route 160 U.S. Route 160 U.S. Route 160 is a 1,465 mile long east–west United States highway in the Midwestern United States. The western terminus of the route is at U.S. Route 89 five miles west of Tuba City, Arizona. The eastern terminus is at U.S... U.S. Route 285 U.S. Route 285 U.S. Route 285 is a north–south United States highway, running 845 miles through the states of Texas, New Mexico and Colorado. The highway's northern terminus is in Denver, Colorado, at exit 201 on Interstate 25. Its southern terminus is in Sanderson, Texas at an intersection with U.S....

U.S. Route 287 U.S. Route 287 U.S. Route 287 is a north–south United States highway. It is long. It serves as the major truck route between the Texas cities of Fort Worth and Amarillo... U.S. Route 350 U.S. Route 350 U.S. Highway 350 is a long northeast-southwest United States highway located entirely within the state of Colorado.-Route description:US 350 starts at a junction with northeast of Trinidad, Colorado. The highway runs northeast, past the Perry Stokes Airport and crossing the Purgatoire River... U.S. Route 400 U.S. Route 400 U.S. Route 400 is a mostly east–west U.S. Highway, commissioned in 1994. Its route number is a "violation" of the usual AASHTO numbering scheme, as there is no US 0 or US 100.... U.S. Route 491 U.S. Route 491 U.S. Route 491 is a north–south U.S. Highway serving the Four Corners region of the United States. One of the newest designations in the U.S. Highway System, it was created in 2003 as a renumbering of U.S. Route 666... U.S. Route 550 U.S. Route 550 U.S. Route 550 is a spur of U.S. Highway 50 that runs from Bernalillo, New Mexico to Montrose, Colorado in the western United States. The section from Silverton to Ouray is frequently called the Million Dollar Highway.- New Mexico :...

Highway Safety

In 2011, Colorado ranked among the five deadliest states for debris/litter–caused vehicle accidents per total number of registered vehicles and population size. Figures derived from the National Highway Traffic Safety Administration

National Highway Traffic Safety Administration

The National Highway Traffic Safety Administration is an agency of the Executive Branch of the U.S. government, part of the Department of Transportation...

 (NHTSA) show at least 16 persons in Colorado were killed each year in motor vehicle collisions with non-fixed objects, including debris, dumped litter, animals and their carcasses.

In the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 including Colorado, most civil aviation incidents are investigated by the National Transportation Safety Board

National Transportation Safety Board

The National Transportation Safety Board is an independent U.S. government investigative agency responsible for civil transportation accident investigation. In this role, the NTSB investigates and reports on aviation accidents and incidents, certain types of highway crashes, ship and marine...

 (NTSB), as well as the Colorado Bureau of Investigation (CBI). When investigating an aviation disaster, NTSB investigators piece together evidence from the crash and determine the likely cause or causes. Where as the CBI will also investigate if there is any involved criminal actions.

State Routes

Colorado maintains state highways for high volume travel routes that do not qualify for Federal funding.

Buses and mass transit

Denver's Regional Transportation District

Regional Transportation District

The Regional Transportation District, or RTD, was organized in 1969 and is the regional authority operating public transit services in eight of the twelve counties in the Denver-Aurora-Boulder Combined Statistical Area in Colorado. RTD is governed by a 15-member, publicly elected Board of...

, known locally as RTD, is the largest public transportation system in Colorado. The RTD system provides bus and light rail

Light rail

Light rail or light rail transit is a form of urban rail public transportation that generally has a lower capacity and lower speed than heavy rail and metro systems, but higher capacity and higher speed than traditional street-running tram systems...

 transportation services in the majority of the Denver-Aurora-Boulder Combined Statistical Area

Denver-Aurora-Boulder Combined Statistical Area

thumb|300px|Map of the 12-county Denver-Aurora-Boulder Combined Statistical AreaThe Denver-Aurora-Boulder, CO Combined Statistical Area is a United States Census Bureau defined Combined Statistical Area located in the Denver region of the state of Colorado...

. Through its FasTracks initiative, RTD is working to rapidly build light rail and bus rapid transit.

Other transportation services exist throughout the state. Some systems, such as in Colorado Springs, focus on the local area. Other systems, such as that found on the Western Slope connecting Glenwood Springs, Aspen, and Carbondale offer inter-city connections.

Communities in Colorado with Regional Bus Service

Alamosa Alamosa, Colorado The city of Alamosa is a Home Rule Municipality that is the county seat and the most populous city of Alamosa County, Colorado, United States. The United States Census Bureau estimates that the city population was 8,682 in 2005... , Aurora Aurora, Colorado City of Aurora is a Home Rule Municipality spanning Arapahoe, Adams, and Douglas counties in Colorado. Aurora is an eastern suburb of the Denver-Aurora-Broomfield, CO Metropolitan Statistical Area . The city is the third most populous city in the Colorado and the 56th most populous city in the... , Boulder Boulder, Colorado Boulder is the county seat and most populous city of Boulder County and the 11th most populous city in the U.S. state of Colorado. Boulder is located at the base of the foothills of the Rocky Mountains at an elevation of... , Brush Brush, Colorado The City of Brush is a Statutory City located in Morgan County, Colorado, United States. The population was 5,117 at the 2000 census.-Geography:Brush is located at .... , Berthoud Berthoud, Colorado Berthoud is a Statutory Town in Larimer and Weld counties in the U.S. state of Colorado. Berthoud is situated north of the Little Thompson River, approximately halfway between the cities of Fort Collins, Colorado and Denver, Colorado along the Front Range Urban Corridor... , Colorado Springs Colorado Springs, Colorado Colorado Springs is a Home Rule Municipality that is the county seat and most populous city of El Paso County, Colorado, United States. Colorado Springs is located in South-Central Colorado, in the southern portion of the state. It is situated on Fountain Creek and is located south of the Colorado... , Delta Delta, Colorado The City of Delta is the county seat and the most populous city of Delta County, Colorado, United States. The population was 8,915 at the 2010 census... , Denver, Durango Durango, Colorado The City of Durango is a Home Rule Municipality that is the county seat and the most populous city of La Plata County, Colorado, United States. The United States Census Bureau said that the city population was 16,887 in 2010 census.-History:... , Englewood Englewood, Colorado The city of Englewood is a Home Rule Municipality located in Arapahoe County, Colorado, United States. As of 2007, the city is estimated to have a total population of 32,532. Englewood is part of the Denver-Aurora Metropolitan Area. Englewood is located in the South Platte River Valley east of the... , Frisco Frisco, Colorado Frisco is a home rule municipality in Summit County, Colorado, United States. The population was 2,443 at the 2000 census. It is a popular town among skiers from around the world... , Fort Collins Fort Collins, Colorado Fort Collins is a Home Rule Municipality situated on the Cache La Poudre River along the Colorado Front Range, and is the county seat and most populous city of Larimer County, Colorado, United States. Fort Collins is located north of the Colorado State Capitol in Denver. With a 2010 census... , Fort Morgan Fort Morgan, Colorado The City of Fort Morgan is a Home Rule Municipality that is the county seat and the most populous city of Morgan County, Colorado, United States. The United States Census Bureau estimated that the city population was 10,844 in 2005.-History:... , Glenwood Springs, Grand Junction Grand Junction, Colorado The City of Grand Junction is the largest city in western Colorado. It is a city with a council–manager government form that is the county seat and the most populous city of Mesa County, Colorado, United States. Grand Junction is situated west-southwest of the Colorado State Capitol in Denver. As... , Greeley Greeley, Colorado The City of Greeley is a Home Rule Municipality that is the county seat and the most populous city of Weld County, Colorado, United States. Greeley is located in the region known as Northern Colorado. Greeley is situated north-northeast of the Colorado State Capitol in Denver. According to the... , Lamar Lamar, Colorado The City of Lamar is a Home Rule Municipality that is the county seat and the most populous city of Prowers County, Colorado, United States. The city population was 8,869 at the U.S... , Limon Limon, Colorado Limon is a Statutory Town that is the most populous town in Lincoln County, Colorado, United States immediately east of Elbert County. The population was 2,071 at the 2000 census. Limon has been called the "Hub City" of Eastern Colorado because Interstate 70, U.S. Highways 24, 40, and 287, and... , Longmont Longmont, Colorado Longmont is a Home Rule Municipality in Boulder and Weld counties in the U.S. state of Colorado. Longmont is located in Northern Colorado. Longmont is the 13th most populous city in the State of Colorado. The word "Longmont" comes from Longs Peak, a prominent mountain named for explorer Stephen H.... , Loveland Loveland, Colorado Loveland is a Home Rule Municipality that is the second most populous city in Larimer County, Colorado, United States. Loveland is situated north of the Colorado State Capitol in Denver. Loveland is the 14th most populous city in Colorado. The United States Census Bureau that in 2010 the... , Montrose Montrose, Colorado The City of Montrose is a Home Rule Municipality that is the county seat and the most populous city of Montrose County, Colorado, United States. The United States Census Bureau estimates that the city population was 15,479 in 2005. The main road that leads in and out of Montrose is U.S... , Pueblo Pueblo, Colorado Pueblo is a Home Rule Municipality that is the county seat and the most populous city of Pueblo County, Colorado, United States. The population was 106,595 in 2010 census, making it the 246th most populous city in the United States.... , Rocky Ford Rocky Ford, Colorado The City of Rocky Ford is a Statutory City located in Otero County, Colorado, United States. The population was 4,286 at the United States Census 2000.-Geography:Rocky Ford is located at .... , Springfield Springfield, Colorado The historic town of Springfield is a Statutory Town that is the county seat and most populous town of Baca County, Colorado, United States. The population was 1,562 at the 2000 census. The town was named for Springfield, Missouri, the origin of early settlers to the town... , Sterling Sterling, Colorado The City of Sterling is a Home Rule Municipality that is the county seat and the most populous city of Logan County, Colorado, United States. The city population was 14,777 at the 2010 census.-Geography:Sterling is located at... , Trinidad Trinidad, Colorado The historic City of Trinidad is a Home Rule Municipality that is the county seat and the most populous city of Las Animas County, Colorado, United States... , Vail Vail, Colorado The Town of Vail is a Home Rule Municipality in Eagle County, Colorado, United States. The population of the town was 4,589 in 2005. The town was established and built as the base village to Vail Ski Resort, with which it was originally conceived... , and Walsenburg Walsenburg, Colorado The City of Walsenburg or Los Leones is a Statutory City that is the county seat and the most populous city of Huerfano County, Colorado, United States...

• Denver and Colorado Springs are serviced by the FREX regional bus.
• Fort Collins, Loveland, Berthoud, and Longmont are serviced by the FLEX regional bus.

Air transportation

Denver International Airport

Denver International Airport

Denver International Airport , often referred to as DIA, is an airport in Denver, Colorado. By land size, at , it is the largest international airport in the United States, and the third largest international airport in the world after King Fahd International Airport and Montréal-Mirabel...

 handles the majority of air traffic in Colorado and is the fifth busiest airport in the world. Colorado Springs Airport

Colorado Springs Airport

Colorado Springs Airport , also known as the City of Colorado Springs Municipal Airport, is a city-owned, public-use, joint civil-military airport located six miles southeast of the central business district of Colorado Springs, a city in El Paso County, Colorado, United States. It is the second...

 also handles commercial flights and offers service to national destinations. The majority of other airports in the state handle on regional or private aviation needs.

Centennial Airport

Centennial Airport

Centennial Airport is located in Dove Valley, an unincorporated portion of Arapahoe County near Denver, Colorado. The airport’s runways also extend into neighboring Douglas County. The airport opened on May 12, 1967 as Arapahoe County Airport, and was renamed on July 13, 1984...

, located in Arapahoe County, is one of the busiest general aviation airports in the country and primarily handles private and corporate traffic.

Commercial Airports in Colorado

ALS San Luis Valley Regional Airport San Luis Valley Regional Airport , also known as Bergman Field, is a public airport located two miles south of the central business district of Alamosa, a city in Alamosa County, Colorado, USA. The airport covers and has two runways. It is mostly used for general aviation, but is also served by...  – San Luis Valley Regional Airport San Luis Valley Regional Airport San Luis Valley Regional Airport , also known as Bergman Field, is a public airport located two miles south of the central business district of Alamosa, a city in Alamosa County, Colorado, USA. The airport covers and has two runways. It is mostly used for general aviation, but is also served by... ASE Aspen-Pitkin County Airport -Commercial aircraft:* SkyWest Airlines flies the CRJ-700 for United Airlines* Republic Airlines flies the Dash 8-Q400 for Frontier Airlines-General aviation:General aviation services are provided by , the airport's sole fixed base operator.-External links:...  – Aspen-Pitkin County Airport Aspen-Pitkin County Airport -Commercial aircraft:* SkyWest Airlines flies the CRJ-700 for United Airlines* Republic Airlines flies the Dash 8-Q400 for Frontier Airlines-General aviation:General aviation services are provided by , the airport's sole fixed base operator.-External links:... CEZ Cortez Municipal Airport Cortez Municipal Airport is a public airport located three miles southwest of the central business district of Cortez, a city in Montezuma County, Colorado, USA. The airport covers and has one runway. It is mostly used for general aviation, but is also served by one commercial airline...  – Cortez Municipal Airport Cortez Municipal Airport Cortez Municipal Airport is a public airport located three miles southwest of the central business district of Cortez, a city in Montezuma County, Colorado, USA. The airport covers and has one runway. It is mostly used for general aviation, but is also served by one commercial airline... COS Colorado Springs Airport Colorado Springs Airport , also known as the City of Colorado Springs Municipal Airport, is a city-owned, public-use, joint civil-military airport located six miles southeast of the central business district of Colorado Springs, a city in El Paso County, Colorado, United States. It is the second...  – City of Colorado Springs Municipal Airport Colorado Springs Airport Colorado Springs Airport , also known as the City of Colorado Springs Municipal Airport, is a city-owned, public-use, joint civil-military airport located six miles southeast of the central business district of Colorado Springs, a city in El Paso County, Colorado, United States. It is the second... DEN Denver International Airport Denver International Airport , often referred to as DIA, is an airport in Denver, Colorado. By land size, at , it is the largest international airport in the United States, and the third largest international airport in the world after King Fahd International Airport and Montréal-Mirabel...  – Denver International Airport Denver International Airport Denver International Airport , often referred to as DIA, is an airport in Denver, Colorado. By land size, at , it is the largest international airport in the United States, and the third largest international airport in the world after King Fahd International Airport and Montréal-Mirabel... DRO Durango-La Plata County Airport Durango-La Plata County Airport is a public airport located 10 miles southeast of the central business district of Durango, a city in La Plata County, Colorado, USA. The airport covers and has one runway.- Airlines and destinations :...  – Durango-La Plata County Airport Durango-La Plata County Airport Durango-La Plata County Airport is a public airport located 10 miles southeast of the central business district of Durango, a city in La Plata County, Colorado, USA. The airport covers and has one runway.- Airlines and destinations :... EGE – Eagle County Regional Airport

FNL Fort Collins-Loveland Municipal Airport Fort Collins-Loveland Municipal Airport is a public airport located nine miles southeast of Fort Collins and northeast of Loveland, both cities in Larimer County, Colorado, United States. The airport covers and has two runways...  – Fort Collins-Loveland Municipal Airport Fort Collins-Loveland Municipal Airport Fort Collins-Loveland Municipal Airport is a public airport located nine miles southeast of Fort Collins and northeast of Loveland, both cities in Larimer County, Colorado, United States. The airport covers and has two runways... GJT – Grand Junction Regional Airport GUC Gunnison-Crested Butte Regional Airport Gunnison-Crested Butte Regional Airport , also known as Gunnison County Airport, is a public airport located at the southern edge of Gunnison, Colorado...  – Gunnison-Crested Butte Regional Airport Gunnison-Crested Butte Regional Airport Gunnison-Crested Butte Regional Airport , also known as Gunnison County Airport, is a public airport located at the southern edge of Gunnison, Colorado... HDN Yampa Valley Airport Yampa Valley Airport , also known as Yampa Valley Regional Airport, is a public airport located east of Hayden and approximately west of Steamboat Springs in Routt County, Colorado, USA. The airport covers and has one runway...  – Yampa Valley Airport Yampa Valley Airport Yampa Valley Airport , also known as Yampa Valley Regional Airport, is a public airport located east of Hayden and approximately west of Steamboat Springs in Routt County, Colorado, USA. The airport covers and has one runway... MTJ Montrose Regional Airport Montrose Regional Airport is a non-towered public airport located at the northwest edge of Montrose in the zip code of 81401 and in the southwest corner of the U.S. state of Colorado...  – Montrose Regional Airport Montrose Regional Airport Montrose Regional Airport is a non-towered public airport located at the northwest edge of Montrose in the zip code of 81401 and in the southwest corner of the U.S. state of Colorado... PUB Pueblo Memorial Airport Pueblo Memorial Airport is a city-owned public-use airport located five miles east of the central business district of Pueblo, a city in Pueblo County, Colorado, United States. It is mostly used for general aviation, but is also served by one commercial airline. The Pueblo Airport is a popular...  – Pueblo Memorial Airport Pueblo Memorial Airport Pueblo Memorial Airport is a city-owned public-use airport located five miles east of the central business district of Pueblo, a city in Pueblo County, Colorado, United States. It is mostly used for general aviation, but is also served by one commercial airline. The Pueblo Airport is a popular... TEX Telluride Regional Airport Telluride Regional Airport is a public use airport located five nautical miles west of the central business district of Telluride, a town in San Miguel County, Colorado, United States. It is owned by the Telluride Regional Airport Authority...  – Telluride Regional Airport Telluride Regional Airport Telluride Regional Airport is a public use airport located five nautical miles west of the central business district of Telluride, a town in San Miguel County, Colorado, United States. It is owned by the Telluride Regional Airport Authority...

Rail transportation

Amtrak Passenger Railroad Routes through Colorado

California Zephyr California Zephyr The California Zephyr is a long passenger train route operated by Amtrak in the midwestern and western United States.It runs from Chicago, Illinois, in the east to Emeryville, California, in the west, passing through the states of Illinois, Iowa, Nebraska, Colorado, Utah, Nevada, and California... :  Chicago, Galesburg Galesburg, Illinois Galesburg is a city in Knox County, Illinois, in the United States. As of the 2010 census, the city population was 32,195. It is the county seat of Knox County.... , Omaha Omaha, Nebraska Omaha is the largest city in the state of Nebraska, United States, and is the county seat of Douglas County. It is located in the Midwestern United States on the Missouri River, about 20 miles north of the mouth of the Platte River... , Fort Morgan Fort Morgan, Colorado The City of Fort Morgan is a Home Rule Municipality that is the county seat and the most populous city of Morgan County, Colorado, United States. The United States Census Bureau estimated that the city population was 10,844 in 2005.-History:... , Denver, Winter Park Winter Park, Colorado Winter Park is a Home Rule Municipality in Grand County, Colorado, United States. The town population was 662 at the 2000 census, although tourists and seasonal workers significantly increase the population.... , Granby Granby, Colorado The Town of Granby is a Statutory Town that is the most populous town in Grand County, Colorado, United States. Granby is situated along U.S. Highway 40 in Middle Park about west of Denver, Colorado, southwest of Rocky Mountain National Park... , Glenwood Springs Glenwood Springs, Colorado The City of Glenwood Springs is a Home Rule Municipality that is the county seat and the most populous city of Garfield County, Colorado, United States. The United States Census Bureau estimated that the city population was 8,564 in 2005... , Grand Junction Grand Junction, Colorado The City of Grand Junction is the largest city in western Colorado. It is a city with a council–manager government form that is the county seat and the most populous city of Mesa County, Colorado, United States. Grand Junction is situated west-southwest of the Colorado State Capitol in Denver. As... , Salt Lake City Salt Lake City, Utah Salt Lake City is the capital and the most populous city of the U.S. state of Utah. The name of the city is often shortened to Salt Lake or SLC. With a population of 186,440 as of the 2010 Census, the city lies in the Salt Lake City metropolitan area, which has a total population of 1,124,197... , Reno Reno, Nevada Reno is the county seat of Washoe County, Nevada, United States. The city has a population of about 220,500 and is the most populous Nevada city outside of the Las Vegas metropolitan area... , Sacramento Sacramento Sacramento is the capital of the state of California, in the United States of America.Sacramento may also refer to:- United States :*Sacramento County, California*Sacramento, Kentucky*Sacramento – San Joaquin River Delta... , and Emeryville Emeryville, California Emeryville is a small city located in Alameda County, California, in the United States. It is located in a corridor between the cities of Berkeley and Oakland, extending to the shore of San Francisco Bay. Its proximity to San Francisco, the Bay Bridge, the University of California, Berkeley, and... Southwest Chief Southwest Chief The Southwest Chief is a passenger train operated by Amtrak on a 2256-mile BNSF route through the Midwestern and Southwestern United States. It runs from Chicago, Illinois, to Los Angeles, California, passing through Illinois, Iowa, Missouri, Kansas, Colorado, New Mexico, Arizona, and California... :  Chicago, Galesburg Galesburg, Illinois Galesburg is a city in Knox County, Illinois, in the United States. As of the 2010 census, the city population was 32,195. It is the county seat of Knox County.... , Kansas City Kansas City, Missouri Kansas City, Missouri is the largest city in the U.S. state of Missouri and is the anchor city of the Kansas City Metropolitan Area, the second largest metropolitan area in Missouri. It encompasses in parts of Jackson, Clay, Cass, and Platte counties... , Topeka Topeka, Kansas Topeka |Kansa]]: Tó Pee Kuh) is the capital city of the U.S. state of Kansas and the county seat of Shawnee County. It is situated along the Kansas River in the central part of Shawnee County, located in northeast Kansas, in the Central United States. As of the 2010 census, the city population was... , Lamar Lamar, Colorado The City of Lamar is a Home Rule Municipality that is the county seat and the most populous city of Prowers County, Colorado, United States. The city population was 8,869 at the U.S... , La Junta La Junta, Colorado The City of La Junta is a Home Rule Municipality that is the county seat and the most populous city of Otero County, Colorado, United States. The city population was 7,568 at the U.S. Census 2000. La Junta is located on the Arkansas River in southeastern Colorado east of Pueblo.-History:During... , Trinidad Trinidad, Colorado The historic City of Trinidad is a Home Rule Municipality that is the county seat and the most populous city of Las Animas County, Colorado, United States... , Raton Raton, New Mexico Raton is a city in Colfax County, New Mexico, United States. The population was 7,282 at the 2000 census. It is the county seat of Colfax County. The city is located just south of Raton Pass.-Name:... , Lamy Lamy, New Mexico Lamy is a census-designated place in Santa Fe County, New Mexico, United States, to the south of the city of Sante Fe. The community was named for Archbishop Jean-Baptiste Lamy, and lies within the Bishop John Lamy Spanish Land Grant, which dates back to the eighteenth century.Lamy is part of the... , Albuquerque Albuquerque, New Mexico Albuquerque is the largest city in the state of New Mexico, United States. It is the county seat of Bernalillo County and is situated in the central part of the state, straddling the Rio Grande. The city population was 545,852 as of the 2010 Census and ranks as the 32nd-largest city in the U.S. As... , Gallup Gallup, New Mexico - Demographics :As of the census of 2000, there were 20,209 people, 6,810 households, and 4,869 families residing in the city. The population density was 1,513.7 people per square mile... , Flagstaff Flagstaff, Arizona Flagstaff is a city located in northern Arizona, in the southwestern United States. In 2010, the city's population was 65,870. The population of the Metropolitan Statistical Area was at 134,421 in 2010. It is the county seat of Coconino County... , and Los Angeles

Future issues

Due to Colorado's population growth, many highways are in need of expansion. Project proposals include expanding US 36, Interstate 70, and completing the 470 loop by building a highway between Golden and Boulder to replace State Highway 93.

Colorado is also suffering from bridge infrastructure problems around the state.