Projects

Traffic Impacts

Week of Sept. 15, 2019

Remember: two lanes of traffic on I-25 will be open in each direction during the day. While all planned lane closures on I-25 are restricted to nighttime, emergency repairs or response to motor vehicle crashes may require daytime closures. Sign up for text alerts by texting I25GAP to 21000.

Please pay close attention through the construction zone. Watch your following distance and avoid distracted driving.


Watch for construction, traffic shifts, and a 60 mph speed limit along all 18 miles of the South Gap corridor. 

Two travel lanes in each direction will be open during peak travel hours. Planned lane closures are restricted to nighttime hours only. Check cotrip.org for current travel times


Sky View Lane (Tomah Road) On-Ramp to Northbound I-25 Closed This Week

On Monday, Sept. 16, crews will begin drainage work along northbound I-25, north of Sky View Lane. To do so safely will require the following traffic impacts:

  • Crews will shift traffic into a new lane alignment from Monday, Sept. 16, to Sunday, Sept. 22. Traffic will then be restored to its original alignment by Monday, Sept. 23.
  • The Sky View Lane on-ramp to northbound I-25 will be closed from Monday, Sept. 16, through Monday, Sept. 23. The ramp will reopen once traffic is restored to its original alignment on northbound I-25. To access northbound I-25 during this closure, please travel north and access Interstate 25 using Plum Creek Parkway.

Upper Lake Gulch Road Ramp Closures

On Sunday, Sept. 15, crews will close the Upper Lake Gulch Road on-ramp to southbound I-25 from 8 p.m. to 5 a.m. to safely stripe the road into a new lane configuration. To access southbound I-25, motorists will detour north to Sky View Lane (Tomah Road) and turn around to access southbound I-25.

East Frontage Road Closure Coming Week of Sept. 22

Crews are planning to close a portion of the East Frontage Road starting on Sunday, Sept. 22. This closure is expected to last from Sunday, Sept. 22 through Sunday, Sept. 29. The East Frontage Road will be closed from Sky View Lane north to Columbine Open Space (see block 8 on the map below). For more information on frontage road closures, please visit the I-25 South Gap Frontage Road webpage.


Closures

* Remember: planned lane closures can be affected by weather. 

Description Time Frame Work Detour

Single lane closures northbound and southbound I-25
between Plum Creek Parkway and Sky View Lane 

Sunday-Friday
Sept. 15-Sept. 20
8 p.m. to 5 a.m. 

Cable rail,
pothole repair and
barrier set

One lane open in each direction of I-25.
Stay the course!

Single lane closures along northbound and southbound I-25 on 
the southern section of the project, between Greenland and 
Monument

Sunday-Friday
Sept. 15-Sept. 20
8 p.m. to 5 a.m.

Barrier installation, traffic shifts,
striping, pothole repairs, paving, 
emergency pull-out sign placement
and glare screen installation

One lane open in each direction of I-25. 
Stay the course!

Single lane closures along northbound and southbound I-25 between
Sky View Lane (Tomah Road)
and Greenland Road

Sunday-Friday
Sept. 15-Sept. 20
8 p.m. to 5 a.m.

Pre-construction activities

One lane open in each direction of I-25. 
Stay the course!

Closure of the Sky View Lane (Tomah Road) on-ramp to northbound I-25 

Sunday-Sunday
Sept. 15-Sept. 22
12 a.m. to 12 a.m.

Drainage work

To access northbound I-25 during this closure, please travel north and access Interstate 25 using Plum Creek Parkway.

Closure of Upper Lake Gulch Road on-ramp to southbound I-25

Sunday
Sept. 15
8 p.m. to 5 a.m.

Striping operations

Detour north to Sky View Lane (Tomah Road) and turn around to access southbound I-25. 

Shoulder closures along northbound and southbound I-25
throughout the 18-mile project corridor.

Monday-Friday
Sept. 16-Sept. 20
8:30 a.m. to 4 p.m.

Fiber optic work

One lane open in each direction of I-25. 
Stay the course!

Swipe table to see more content

Description Time Frame Work Detour
24-Hour Flagging (East Frontage Road Only) 

Midnight Wednesday, Sept. 18
to midnight Thursday, Sept. 19

Frontage road work Watch for flaggers who will direct traffic.
Single lane closures and flagging operations
along East and West Frontage Roads 
Plum Creek Parkway and Sky View Lane (Tomah Road)

Daytime Hours
Monday-Friday
Sept. 16-Sept. 20
8:30 a.m. to 4 p.m.

Installation of fiber optic lines,
frontage road repairs and install
guardrail
Watch for flaggers who will direct traffic.
Residential access will be maintained. 
Flaggers will be present at the Greenland Road access to I-25

Monday-Saturday
Sept. 16-Sept. 21
8:30 a.m. to 4 p.m.

Bridge work Watch for flaggers who will direct traffic.
Residential access will be maintained. 
Flaggers will be present at the Upper Lake Gulch Road access to I-25

Monday-Saturday
Sept. 16-Sept. 21
8:30 a.m. to 4 p.m.

Bridge work Watch for flaggers who will direct traffic.
Swipe table to see more content

Project Offices in Castle Rock

A temporary construction office for CDOT and its contractor partner, Kraemer North America, is located near the intersection of Crystal Valley Parkway and the I-25 east Frontage Road. Please watch for vehicles entering and exiting the site throughout the duration of construction. Upon project completion, the area will be returned to its previous state; the asphalt will be removed and the area will be re-graded and seeded.


Safety for drivers and workers is our top priority during construction.

 Get project text alerts:
Text I25GAP to 21000.

 Get project emails:

* indicates required

Contact Us

Colorado: The Official State Web Portal