Colorado State Highway 21

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State Highway 21 marker

State Highway 21
Powers Boulevard
Map of El Paso County in central Colorado with SH 16 highlighted in red
Route information
Maintained by CDOT
Length22.60 mi[2] (36.37 km)
Major junctions
South end SH 16 in Fountain
  US 24 in Colorado Springs
North end SH 83 near Black Forest
CountiesEl Paso
Highway system
Colorado State Highways
SH 17SH 22

State Highway 21 (SH 21) is an expressway in El Paso County, in eastern Colorado Springs. The highway serves as an eastern bypass for the city of Colorado Springs. Officially, the routing is from SH-16 (Mesa Ridge Parkway) in Fountain to InterQuest Parkway/ SH 83 in Black Forest.

Route description[edit]

SH 21 northbound in Colorado Springs
End of SH 21 at SH 83 in Colorado Springs

For most of its routing the highway is a four to six-lane, limited access highway. In the north, it begins as a semi-freeway with a 60 mph speed limit, and becomes a six lane expressway with a 55 mph speed limit in the city of Colorado Springs after Union Boulevard and remains so throughout the entire route. The northern section, from Research Parkway to Interquest Parkway/SH 83 is constructed to interstate highway standards with sufficient right-of-way to construct planned overpasses and on/off-ramps. CDOT completed interchanges and bridges at Union Boulevard and Briargate Parkway in 2013 and an interchange at Old Ranch Road in 2015. Future interchanges at Research Parkway, SH 83 and a future freeway to freeway interchange planned for the SH 21/I-25/Northgate Blvd interchange will be constructed based on the availability of funding and need. The whole routing from I-25 to Proby Parkway is planned as a controlled-access freeway. The southern portion (from Research Parkway) is a limited-access highway with interchanges constructed at Woodmen Road and Platte Ave/US 24. SH 21 and US 24 overlap between Platte Ave, and Fountain Blvd. It ends at SH-16 also known as Mesa Ridge Parkway in Security-Widefield.


The route was established on October 1, 2007.[1] When defined, its routing included the entire length of Powers Boulevard.

Junction list[edit]

The entire route is in El Paso County.

Fountain131211 SH 16 west (Mesa Ridge Parkway) – FountainSouthern terminus; road continues west as SH 16
Colorado Springs139224 US 24 west (Fountain Boulevard) – Manitou SpringsSouth end of US 24 overlap
140230Stewart AvenueInterchange; northbound entrance only
141227141 US 24 east (Platte Avenue) – LimonInterchange; north end of US 24 overlap
149240149Woodmen RoadInterchange; signed as exits 149A (east) and 149B (west) northbound
152245151Union Boulevard, Briargate ParkwayInterchange
153246153Old Ranch RoadInterchange
Black Forest154248 SH 83 north (Interquest Parkway) – Colorado Springs, DenverNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b Salek, Matthew E. (January 30, 2010). "Colorado Routes 20–39". Retrieved March 3, 2010.
  2. ^ "Segment list for SH 21". Retrieved 2007-05-12.

External links[edit]

KML is from Wikidata