I-25 Acceleration/ Deceleration Lanes from Fillmore Street to Garden of the Gods Road

Updated Traffic Advisory

Planned April 3, 2026 overnight full closure of northbound I-25 in Colorado Springs delayed until April 10, 2026. 
Overnight closures will begin at 10 p.m. on April 10.

For details and detour routes, go to the Traffic Advisory.

About the Project

The Colorado Department of Transportation and its contracting partner, SEMA Construction, began improvements along Interstate 25 from Garden of the Gods Road to Fillmore Street in Colorado Springs at the end of October. The project will enhance safety for Colorado’s traveling public by adding acceleration and deceleration lanes. The anticipated completion date of the project is late August 2026.

The growth of the community and business expansion has necessitated the initiation of the improvement project. Continuous acceleration and deceleration lanes will be added to both the northbound and southbound directions of I-25, spanning from Garden of the Gods Road to Fillmore Street. These auxiliary lanes aim to even out traffic flow and assist drivers in merging and exiting traffic efficiently. Additionally, to enhance road safety, the roadway will undergo resurfacing and adjustments will be implemented to address drainage concerns on the road, as well as the installation of permanent stop signs at Chestnut Street after the project is completed.

While working on the auxiliary lane project, the aging bridge on I-25 over Ellston Street will be reconstructed and widened. Additionally, bridge deck repairs will be made on the Garden of the Gods overpass structure. Upgrades to the intelligent transportation system (ITS) infrastructure (fiber optics and ramp meter station) will help with the flow of traffic to monitor, trigger and time vehicle release with automatic vehicle and queue detection to mitigate any traffic backups by adjusting meter timing.

Work this Week & Lane Closures I-25 Acceleration/ Deceleration Lanes

Project Facts

  • Construction Cost: $62 Million
  • Contractor: SEMA
  • Timeline: October 2023 through August 2026
  • Location: I-25 from Garden of the Gods Road to Fillmore Street
    • Nearest Town/City: Colorado Springs
    • Mile Point(s): 144.5 to 146
    • County: El Paso
Ellston Street Closure
Ellston Street Closure

Project Benefits

  • Auxiliary lanes help to balance traffic and facilitate the positioning of drivers at exits and the merging of drivers at entrances.
  • Resurfacing the roadway will create a smoother surface.
  • To help with drainage issues on the roadway, curve cross slope corrections will be made.

Work Schedule

  • Daytime work hours are Sunday through Saturday, 7 a.m. to 5 p.m.
  • Nighttime work hours are Friday and Sunday, 7 p.m. to 6 a.m.
Traffic Advisory

Overnight full closures of southbound I-25 in Colorado Springs on Friday, April 17

Overnight closures will begin at 10 p.m. with a detour route in effect.

Colorado Springs - The Colorado Department of Transportation and its contract partner, SEMA Construction, Inc., will implement a full closure of southbound Interstate 25 at Garden of the Gods Road (near Exit 146) on Friday, April 17. During the planned overnight closure, crews will be repairing the bridge deck at Garden of the Gods Road. This closure is necessary for the safety of the traveling public.

Crews will be conducting bridge deck repairs, and the removal and replacement of expansion devices on both ends of the bridge. The work schedule is weather-dependent and subject to change.

The full closure of southbound I-25 at Garden of the Gods Road and detour route will be in effect from:

  • 10 p.m. on Friday, April 17 to 4 a.m. on Saturday, April 18

To complete the bridge deck repairs, the following upcoming closures are anticipated, and a detour route will be in effect. Advance notice and project updates will be communicated to the public ahead of these activities.

  • May 1: Full overnight closure of northbound I-25 at Garden of the Gods Road
  • May 8: Full overnight closure of southbound I-25 at Garden of the Gods Road

Traffic Impacts

On the evening of Friday, April 17, motorists can expect:

  • Beginning at 7 p.m., northbound I-25 at Garden of the Gods Road will be reduced to two lanes.
  • From 10 p.m. to 4 a.m., there will be a full closure of northbound I-25 at Garden of the Gods Road. The following detour route will be in effect:
    • Motorists traveling southbound on I-25:
      • Motorists should take Exit 146 to Garden of the Gods Road
      • Motorists should turn right (heading west) on Garden of the Gods Road, turn left (heading south) on Centennial Boulevard and continue straight to reconnect with southbound I-25 past Fillmore Street near Centennial Boulevard
  • All lanes will reopen at 6 a.m. on Monday, April 20
  • Daytime work hours are Sunday through Saturday, 7 a.m. to 5 p.m.
  • Nighttime work hours are Sunday through Saturday, 7 p.m. to 6 a.m.
  • Refer to COtrip.org for real-time travel conditions and road closures

The work schedule is weather dependent and subject to change.

Project Contact Information

Contact the project team with questions, concerns or if you would like to receive construction updates.

Northbound I-25 closure and detour map.
Northbound I-25 closure and detour map.