March 18, 2016
Ramp Closure and Detour

On Tuesday, March 22 and Wednesday, March 23 from 9 p.m. to 5 a.m. each night, the southbound I-25 on and off-ramps at Cimarron Street will be closed. Traffic will detour east on Bijou Street to south Cascade Avenue. The ramp closures are required for paving activities and to set temporary barrier. Click here to view detour map. All work is subject to weather and road conditions.

Lane Restrictions on I-25 and US 24

On Sunday night, March 20 from 7 p.m. to 5 a.m.drivers will encounter single and double lane restrictions along northbound I-25 (between Colorado Avenue and south Nevada/Tejon Street). In addition Sunday, March 20 through Thursday, March 24 each night, the travelling public will experience various single lane restrictions on eastbound and westbound US 24 (between 8th Street and I-25). These lane restrictions are required for removal and restriping activities, paving and to set temporary barrier. 

Drivers are Urged to Slow Down and Pay Attention
  • I-25 speed limit reduced to 55 miles per hour in the I-25/Cimarron project area.
  • Pay close attention when driving near the I-25/Cimarron Project. 
  • Slow down, observe speed limits, avoid distractions, and allow extra time for your commute.
  • Alternative route advised.
Click here for additional information of what the travelling public can expect over the next few months.
The following is a summary of upcoming project construction activity.
Construction schedules are subject to change based on weather/other unforeseen circumstances.
Activity Area
Time/date activity scheduled to begin
Time/date activity scheduled to end
Activity impacts/comments
Eastbound / westbound Cimarron/US 24
between 8th Street and I-25
Sunday, March 20
9 p.m.

Friday, March 25
5 a.m.
Various single lane closures
Northbound I-25, mile marker 141.5 - 140.4
Sunday, March 20
7 p.m.
Monday, March 21
5 a.m.
Various lane closures with double lane closures beginning at 9 p.m. 
Southbound I-25 on- and off-ramp
Tuesday, March 22
9 p.m.
Thursday, March 24
5 a.m.
On and off-ramp overnight closures. Detour east Bijou Street to south Cascade Avenue.
Pikes Peak Greenway
Currently in place
Intermittent closures continuing through 2017
Detour routes clearly marked. Possible intermittent closures of trail throughout the project.
Midland Trail
Currently in place
Summer of 2017
Detour routes clearly marked.
How Do I Get Project Updates?

Sign up for periodic project e-newsletters by sending an email to [email protected]. Project alerts are sent via email or text alert. To receive alerts, click, then click on the bright green telephone. Scroll down to the "Projects" list for I-25 and Cimarron Interchange.
Project information is available at: A telephone hotline is also available at 719-302-6781. 

What Are The Project Goals?
  • Maximize overall safety, capacity and operation of the interchange and the surrounding transportation network within the Project budget;
  • Complete Project construction to be fully operational before December 1, 2017;
  • Minimize impacts and inconvenience to the community, motorists, businesses, downtown and the public during construction; and
  • Achieve an aesthetically pleasing design compatible with current and future amenities and enhancements in and around the interchange.
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