Traffic Impacts

I-25 South Gap | Work this Week

For the week of Aug. 7

Various Impacts Near Larkspur – As crews continue construction, motorists should watch for various impacts on I-25 in the Larkspur area. For the most current information on construction impacts near Larkspur, please follow our Facebook page or check our website each day. Thank you for your patience!

Remember: All construction schedules described below are weather-dependent and could change.

Final weekend of the Renaissance Festival; expect increased traffic through the I-25 South Gap: Hear ye, hear ye! M’ladies and m’lords traveling from kingdoms near and afar – the annual Renaissance Festival is back. Brave steeds and royal carriages should be awareth of upcoming impacts! Plan ahead and expecth delays! Learn more.


Northbound I-25 Off-Ramp to County Line Road Closed - Aug. 9

Overnight Tuesday, Aug. 9, from 7 p.m. to 5 a.m., crews require a closure of the northbound I-25 off-ramp to County Line Road (exit 163) for guardrail operations. For access to County Line Road, use the CO 105 interchange (exit 161).

Ramp Closures near Larkspur and Monument - Aug. 8

Overnight Monday, Aug. 8, watch for the following ramp closures near Monument and Larkspur:

  • 7 p.m. to 5 a.m. - The County Line Road on-ramp to northbound I-25 (exit 163) near Monument closed for guardrail operations. For access to northbound I-25, use the CO 105 interchange (exit 161).
  • 8 p.m. to 6 a.m. - The Upper Lake Gulch Road on-ramp to southbound I-25 (exit 172) near Larkspur closed for paving operations. For access to southbound I-25, head north on I-25 and turn around using the Sky View Lane/Tomah Road interchange (exit 174).

Two-Week Lane and Ramp Closures near Larkspur

Beginning at 8 p.m. on Sunday, Aug. 7 and lasting for approximately two weeks, motorists can expect the following travel impacts as crews install concrete aprons on the roadway to help with drainage.

  • Spruce Mountain Road on-ramp to northbound I-25 closed (exit 173) – For access to northbound I-25, use the Upper Lake Gulch Road interchange (exit 172).
  • Southbound I-25 off-ramp to Spruce Mountain Road closed – For access to Larkspur, use the southbound I-25 off-ramp to Upper Lake Gulch Road
  • The southbound I-25 auxiliary lane (far-right, exit-only lane) between the Sky View Lane/Tomah Road (exit 174) and Spruce Mountain Road interchanges will be closed. Note – the Sky View Lane/Tomah Road on-ramp to southbound I-25 will remain OPEN for motorists.

Overnight Lane Closures

Overnight Sunday, Aug. 7 through Friday, Aug. 12, watch for overnight lane closure hours along northbound and southbound I-25 as crews complete guardrail patching and repairs, paving activities and permanent striping operations. 

  • Northbound I-25 – 7 p.m. to 5 a.m.
  • Southbound I-25 – 8 p.m. to 6 a.m.

At least one lane will be open during this time for you to get to your destination – stay the course of I-25. Please be extra cautious driving through the work zone, watch for crews and follow posted speeds.

Daytime I-25 Express Lane Closures

On Monday, Aug. 8 through Friday, Aug. 12, from 8 a.m. to 4 p.m., motorists should watch for Express Lane (far-left lane) closures on northbound and southbound I-25 between Monument and Castle Rock for wall painting, striping, and signage and tolling equipment installation.

 At least two lanes will be open during this time for you to get to your destination – stay the course of I-25. Please be extra cautious driving through the work zone, watch for crews and follow posted speeds and signage.


Closures

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

Description Time Frame Work Detour
Closure of the southbound I-25 Express Lane from Plum Creek Parkway to the former southbound I-25 rest area

Reopens at 6 a.m. on Saturday, Aug. 6

Concrete apron installation

Stay on I-25

Closure of the Monument Hill Frontage Road between the northern entrance of Misty Acres Boulevard and County Line Road.

Reopens by 5 a.m. on Saturday, Aug. 6

Roadway widening

Use the CO 105 interchange (exit 161)

Spruce Mountain Road on-ramp to northbound I-25 closed. Southbound I-25 off-ramp to Spruce Mountain Road closed. Southbound I-25 auxiliary lane between Spruce Mountain Road and Sky View Lane/Tomah Road closed.

Beginning at 8 p.m. on Sunday, Aug. 7 and lasting approximately two weeks

Install concrete aprons

Use the Upper Lake Gulch Road interchange (exit 172).

Various lane closures along northbound and southbound I-25

Sunday - Friday
Aug. 7-12

NB - 7 p.m. to 5 a.m.

SB - 8 p.m. to 6 a.m.

Guardrail patching, striping operations and pre-paving activities

One lane open. Stay on I-25.

Express Lane (far-left lane) closures along northbound and southbound I-25 from Castle Rock to Monument Hill

Monday - Friday
Aug. 8-12
8 a.m. to 4 p.m.

Wall patching and paving activities

Stay on I-25

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

Monday - Friday
Aug. 8-12
8:30 a.m. to 4 p.m.

Installation of guardrail, signage and cable rail, and complete landscaping activities and fiber optic work

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

Frontage Road Work

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)

Monday - Friday
Aug. 8 - 13
7 a.m. to 5 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 County Line Road, Greenland Road and Upper Lake Gulch Road interchanges to I-25.

Monday - Saturday
Aug. 8 - 13
7 a.m. to 5 p.m.

Bridge work and deer guard paving operations Watch for flaggers who will direct traffic.
Residential access will be maintained. 

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.

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