Interstate 225 - AbsoluteAstronomy.com

Interstate 225 is a spur route

Spur route

A spur route is a short road forming a branch from a longer, more important route . A bypass or beltway is never considered a true spur route as it typically reconnects with the major road...

of Interstate 25 in 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...

. It is the only auxiliary route of Interstate 25, and one of two in Colorado. I-225 traverses 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...

and small portions of Denver

Denver, Colorado

The City and County of Denver is the capital and the most populous city of the U.S. state of Colorado. Denver is a consolidated city-county, located in the South Platte River Valley on the western edge of the High Plains just east of the Front Range of the Rocky Mountains...

and Greenwood Village

Greenwood Village, Colorado

The city of Greenwood Village is a prominent suburb of the Denver-Aurora Metropolitan Statistical Area and a Home Rule Municipality located in Arapahoe County, Colorado, United States...

. It runs north from Interstate 25 to Interstate 70. It intersects with Interstate 70 Business/U.S. Highway 40/U.S. Highway 287, known locally as Colfax Avenue

Colfax Avenue

Colfax Avenue is the main street that runs east–west through the Denver-Aurora metropolitan area in Colorado. As U.S. Highway 40, it was one of two principal highways serving Denver before the Interstate Highway System was constructed. In the local street system, it lies 15 blocks north of the zero...

. Construction on the freeway began in 1964 and continued progressively through many years until final completion in 1976.

Route description

The southern end of I-225 begins at an interchange with Interstate 25

Interstate 25 in Colorado

In the U.S. state of Colorado, Interstate 25 follows the north–south corridor through Colorado Springs and Denver. It replaced U.S. Highway 87 and most of U.S. Highway 85 for through traffic....

. The road then traverses from the southern end northeastward through southern Denver, with Cherry Creek State Park

Cherry Creek State Park

Cherry Creek State Park is a state park located in Arapahoe County, Colorado, United States. The park is in the city of Aurora. The park consists of a natural prairie environment with an reservoir at its center which is shared by powerboats, sailboats, and paddle craft. The Cherry Creek Marina...

and Cherry Creek Lake on its east side. After exits with DTC Boulevard and Yosemite Street in Greenwood Village

Greenwood Village, Colorado

The city of Greenwood Village is a prominent suburb of the Denver-Aurora Metropolitan Statistical Area and a Home Rule Municipality located in Arapahoe County, Colorado, United States...

, a large suburb of the Denver-Aurora Metropolitan Statistical Area

Denver-Aurora Metropolitan Area

The Denver-Aurora-Broomfield, CO Metropolitan Statistical Area is a United States Census Bureau defined Metropolitan Statistical Area in the State of Colorado that includes the City and County of Denver and nine suburban counties. The Census Bureau estimates that the population was 2,357,404 on...

, the road traverses Aurora

Aurora, Colorado

, where it interchanges with State Highway 83

Colorado State Highway 83

State Highway 83 is a state highway that runs from SH 21 interchange in north Colorado Springs to SH 2 at Leetsdale Dr. / Colorado Blvd. in Denver.-Route description:...

at the northern boundary of Cherry Creek State Park. Following the exit at SH 83, the freeway enters a suburban area of Aurora, where it turns northward and has exits at Iliff Avenue, Mississippi Avenue, and Alameda Avenue, also signed as State Highway 30

Colorado State Highway 30

Colorado State Highway 30, alternatively known as Hampden Avenue, is a state route in the independent city of Denver and Arapahoe County. Its west end is at Interstate 25 and US 285 in Denver and its east end is at Quincy Avenue east of Aurora....

. After crossing Sand Creek

Sand Creek (Denver, Colorado)

Sand Creek is a tributary that flows into the South Platte River near Commerce City, Colorado. From its source in unincorporated Arapahoe County, it flows through Aurora and Denver before joining the South Platte in Adams County....

, the freeway interchanges with Colfax Avenue

Colfax Avenue

, also signed as 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 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...

and Interstate 70 Business. After the exit, I-225 enters Adams County

Adams County, Colorado

Adams County is the fifth most populous of the 64 counties of the state of Colorado of the United States. The United States Census Bureau estimates that the county population was 441,603 in 2010 census, a 21.4% increase since 2000 census. Adams County is named for Alva Adams, Governor of the...

, continuing through the city of Aurora

Aurora, Colorado

. The route then crosses a railroad and reenters Denver, where it interchanges with Interstate 70

Interstate 70 in Colorado

Interstate 70 is a transcontinental Interstate Highway in the United States, stretching from Cove Fort, Utah to Baltimore, Maryland. In Colorado, the highway traverses an east–west route across the center of the state. In western Colorado, the highway connects the metropolitan areas of Grand...

at its northern terminus.

History

Construction on I-225 began in May 1964 at Interstate 70

Interstate 70 in Colorado

. A section from Colfax Avenue

Colfax Avenue

to Sixth Avenue was opened in 1966. Five years later, a segment between Mississippi Avenue and Parker Road was opened, and construction began on another segment south of Parker Road, completed in May of 1975. The rest of the route between Yosemite Street and Interstate 25

Interstate 25 in Colorado

In the U.S. state of Colorado, Interstate 25 follows the north–south corridor through Colorado Springs and Denver. It replaced U.S. Highway 87 and most of U.S. Highway 85 for through traffic....

was completed in May 1976.
Since completion of construction, the road has retained its original designation from I-25

Interstate 25 in Colorado

In the U.S. state of Colorado, Interstate 25 follows the north–south corridor through Colorado Springs and Denver. It replaced U.S. Highway 87 and most of U.S. Highway 85 for through traffic....

to I-70

Interstate 70 in Colorado

Exit list

{| class=wikitable
|-
!County
!Location
!Mile
!#

Exit number

An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit, as well as a sign in the gore....

Arapahoe County, Colorado

As of the census of 2000, there were 487,967 people, 190,909 households, and 125,809 families residing in the county. The population density was 608 people per square mile . There were 196,835 housing units at an average density of 245 per square mile...

|rowspan=2|Greenwood Village

Greenwood Village, Colorado

The city of Greenwood Village is a prominent suburb of the Denver-Aurora Metropolitan Statistical Area and a Home Rule Municipality located in Arapahoe County, Colorado, United States...

|0.673
|1A
|DTC Boulevard, Tamarac Street
|Signed as exit 1 northbound
|- style="background:#fdd;"
| rowspan="2"|1.333
| rowspan="2"|1B
| rowspan="2"|Yosemite Street
||Southbound exit
|-
|rowspan=8|Aurora

Aurora, Colorado

|-
|3.946
|4
|
|
|-
|5.373
|5
|Iliff Avenue
|
|-
|6.886
|7
|Mississippi Avenue
|
|-
|7.921
|8
|Alameda Avenue
|
|-
|8.953
|9
|
|
|-
|rowspan=2|Adams

Adams County, Colorado

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