Projects

Traffic Impacts

For the week of April 3

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Thank you for driving safely through the 18-mile I-25 South Gap project. The barrier and narrower lanes allow us to maintain two lanes in each direction during peak travel times but require extra attention from motorists when traveling through the project corridor. 
 
Remember – speeds vary throughout the entire construction zone. It’s critical that you pay attention to the speed limit signs every time you drive through the Gap and always heed the speed. On the frontage roads, the speed limit is 45 mph and 40 mph during flagging operations.
 
CDOT has funded increased enforcement, which is occurring both on the ground and by aircraft. Fines are doubled in work zones.
 
Read below to learn about anticipated traffic impacts on the project. Note, crews may require emergency mobile lane closures during daytime hours to refresh striping and fix potholes along the corridor. Check Cotrip.org for current travel times.
 
Remember: all construction schedules are weather-dependent and could change.


Daytime Lane Closures

To take advantage of lower traffic volumes, crews may begin having daytime lane closures. CDOT has approved daytime lane closures between 9 a.m. and 3 p.m., Monday through Friday. If you must travel, check cotrip.org for current travel times and check the I-25 South Gap Facebook page for impacts you can expect.

Sky View Lane (Tomah Road) On-Ramp to Southbound I-25 Closed

Overnight on Wednesday, April 8, and Thursday, April 9, from 8 p.m. to 5 a.m., crews will require a closure of the Sky View Lane (Tomah Road) on-ramp to southbound I-25 for a traffic switch. Motorists should head north on either the East or West Frontage Roads and then enter southbound I-25 using the Plum Creek Parkway on-ramp.

Flagging on Best Road Next Week

Daily on Monday, March 30 through Wednesday, April 1, from 8:30 a.m. to 4 p.m., motorists should watch for flaggers and one-way traffic on Best Road, located off of mainline I-25 near Greenland Road. The flagger-controlled road is necessary as crews install drainage in the area. Please give yourself extra time if you take Best Road.

Work Zone Awareness Week Coloring Contest

Parents – We have an activity for your kids to do!

While safety is always top of mind on the I-25 South Gap project, each year a week in April is dedicated nationally toWork Zone Awareness Week. To promote the week’s theme, “Safe Work Zones for All. Protect workers. Protect road users. We Can Do It!” the project team is hosting a coloring contest!

It’s simple to participate. Find a template on the South Gap Facebook page,@I25SouthGapProject,beginning on Monday, April 6. (Or any circle on a piece of 8.5x11 paper will do.) Have your student (ages 5-11) create their masterpiece and then email a photo of the entry with: the child artist’s name, school, and grade level and your email and phone number to [email protected](Note: participation means you agree to having your child’s first name used on our communication platforms, including, but not limited to Facebook, a local billboard and website)

Entries are due by 5 p.m. on Friday, April 17.

Then, vote for your favorite entry the week of April 20. Visit our Facebook page and put a :) in the comments of your favorite entry. Voting will begin Monday, April 20 and closes at noon Friday, April 24.

The winning artist will receive a $50 gift card to Scholastic, and his or her artwork will be used to create a sticker that workers will wear on their hard hats. Any submitted artwork may be used throughout the year on social media and a local billboard.


Closures

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

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Description Time Frame Work Detour

Daytime single lane closures northbound and southbound I-25
between Plum Creek Parkway and Monument

Monday-Friday
April 6-10
9 a.m. to 3 p.m.

To take advantage of lower traffic volumes, crews may begin having daytime single lane closures.

If you must travel, check cotrip.org for current travel times and check the I-25 South Gap Facebook page for impacts.

Overnight single lane closures northbound and southbound I-25
between Plum Creek Parkway and Monument

Sunday-Friday
April 5-10
8 p.m. to 5 a.m.

Guardrail and pothole repairs, guardrail removal, grading, traffic shifts, striping operations, pavement work, paving operations, fiber testing, emergency pull-out sign placement and barrier work.

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

Sky View Lane (Tomah Road) On-ramp to Southbound I-25 Closed

Wednesday-Thursday
April 8-9
8 p.m. to 5 a.m.

Barrier install and ramp restripe

Motorists should head north on either the East or West Frontage Roads and then enter southbound I-25 using the Plum Creek Parkway on-ramp.

Full closure of the southbound I-25 off-ramp to Upper Lake Gulch Road.

Ongoing for 9 months  
(Began Oct. 25)

Bridge demo and rebuild.

 

To access northbound I-25 from Larkspur, motorists should use the Upper Lake Gulch Road on-ramp to northbound I-25.

To access Larkspur from southbound I-25, motorists should use the southbound I-25 off-ramp to Spruce Mountain Road.

Full closure of the Spruce Mountain Road on-ramp to northbound I-25

Ongoing for 9 months
(Began in October 2019)

Bridge demolition and 
reconstruction

Access northbound I-25 from Upper Lake Gulch Road

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

Monday-Friday
April 6-10
8:30 a.m. to 4 p.m.

Earthwork and erosion control

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

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Description Time Frame Work Detour
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
April 6-10
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. 
Thank you for your patience!
Flaggers will be present at the Greenland Road access to I-25

Monday-Saturday
April 6-11
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 along Best Road (off of mainline I-25
near Greenland

Wednesday-Friday
April 8-10
8:30 a.m. to 4 p.m. 

Drainage work Allow extra time and watch for flaggers

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:

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