Friday, April 22, 2016
Southbound I-25 Ramp Closure and Detour

On Friday, April 22, Monday and Tuesday, April 25 and April 26 from 9 p.m. to 5 a.m. each night,the southbound I-25 on-ramp at Cimarron Street/US 24 will be closed. Traffic heading eastbound on Cimarron Street will detour on southbound Nevada Avenue, back to I-25. Traffic heading westbound on Cimarron Street wishing to turn onto southbound I-25 will detour using northbound I-25 to Bijou Street, turn left on Bijou Street, then get back onto southbound I-25. CLICK HERE to view detour map. Watch for clearly marked detour signs to direct you.The ramp closure is required for drainage work. All work is subject to weather and road conditions.

Overnight Lane Restrictions on
Cimarron Street/US 24

Motorists will experience nightly lane restrictions on eastbound Cimarron Street/US 24 
(between 8th Street and I-25). These lane restrictions are required for continued work for the realignment of the I-25 bridge over Cimarron Street/US 24. See chart below for specific dates/times.

I-25 Southbound Off-Ramp Loop Scheduled for Permanent Closure

In early May the traveling public will no longer utilize the existing southbound I-25 loop ramp to exit on to Cimarron Street/US 24. Instead, motorists will exit to the north of Cimarron Street/US 24, about a quarter mile south of the Bijou exit. The existing loop ramp has been in place for the past 56 years, so this will be an adjustment for everyone who frequents this area, watch for signage to direct you. CLICK HERE to view southbound off-ramp realignment.

Drivers are Urged to Slow Down and Pay Attention
  • Speed reductions to 55 mph on I-25 between Colorado Avenue and south Nevada     Avenue/Tejon Street and 30 mph speed reduction on US 24/Cimarron Street between 8th Street and I-25.
  • 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.
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
Southbound I-25 on-ramp at Cimarron St./US 24
Friday, April 22
9 p.m.
Monday, April 25
9 p.m.
Tuesday, April 26
9 p.m. 
Saturday, April 23
5 a.m.
Tuesday, April 26
5 a.m.
Wednesday, April 27
5 a.m.
Southbound I-25 on-ramp closure. Traffic heading eastbound on Cimarron St. will detour on southbound Nevada Ave., back to I-25. Traffic heading westbound on Cimarron St. wishing to turn onto southbound I-25 will detour using northbound I-25 to Bijou St., turn left on Bijou St., then get back onto southbound I-25.

Eastbound Cimarron St./ 
US 24 
between 8th St. and
Sunday, April 24
7 p.m.

Friday, April 29
5 a.m.
Eastbound single lane closures each night.
Eastbound Cimarron St. between I-25 and Sierra Madre St.
Friday, April 1

Next several months
Reduced to one lane
Westbound Cimarron St. between I-25 and Sierra Madre St.
Friday, April 1
Next several months
Reduced to two lanes
Pikes Peak Greenway
Monday, April 4
6 a.m.
Paved section through America the Beautiful Park closed. Gravel section open. Detour routes clearly marked. Possible intermittent closures of trail throughout the project.
Midland Trail
Currently in place
Summer of 2017

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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