Overnight and morning I-25 closures in Douglas County for drainage and paving near Larkspur

Travel Advisory

October 15, 2020 - Douglas County - Motorists are asked to stay the course and expect up to 20-minute delays

DOUGLAS COUNTY– As part of the Colorado Department of Transportation’s Interstate 25 South Gap project, drivers along  I-25 near Larkspur can expect delays from extended closures throughout October as crews repair pavement and install new drainage pipes.  Southbound I-25 is scheduled to close during the overnight hours this weekend through much of next week, followed by work on the northbound side.  

During closures, drivers may see crews setting up cones and signs up to an hour prior to closure start time. There are no alternate routes, so drivers must stay the course on I-25 and plan for delays up to 20 minutes mainly in the evenings and mornings of the closures.

While construction can change due to weather, the current schedule includes the following:

Sky View Lane/Tomah Road Impacts (Oct. 16-24) 

Drainage work beneath I-25 at Sky View Lane will require crews to remove the asphalt pavement, replace the pipes at a depth of up to 15 feet, and then re-pave with asphalt, which needs time to cool. In addition, crews will mill and overlay existing pavement before winter, taking advantage of warmer temperatures.  

  • I-25 full closure in a single direction, with motorists funneling into one lane using the ramps at the Sky View Lane/Tomah Road interchange as a detour:
  • Southbound I-25 closed from 8 p.m. Friday, Oct. 16, to 8 a.m. Saturday, Oct. 17, with traffic using ramp detour 
    I-25 Douglas County Detour 1
  • Southbound I-25 closed from 8 p.m. to 8 a.m. Sunday, Oct. 18, through Thursday, Oct. 22, with traffic using ramp detour.
    I-25 Douglas County Detour 1
  • Northbound I-25 closed from 6 p.m. Saturday, Oct. 24, to 10 a.m. Sunday, Oct. 25, with traffic using ramp detour.
    I-25 Douglas County Detour 2
  • The northbound I-25 off-ramp to Sky View Lane/Tomah Road and northbound I-25 right lane will be closed from 6 p.m. Friday, Oct. 23, to 10 a.m. Saturday, Oct. 24. 
  • If any of the above work is postponed due to weather, crews may need additional closures the week of Oct. 25.  Stay tuned to i25gap.codot.gov or the project Facebook page (@I25SouthGapProject) for updated information. 

Upper Lake Gulch & Spruce Mountain Road Impacts (Oct. 17 & Oct. 23)

Near Larkspur, there will be extended I-25 closures with ramp detours at two exits – Spruce Mountain Road and Upper Lake Gulch Road. Crews will close I-25, and motorists will funnel into one lane through the off- and on-ramps: 

  • Southbound I-25 and southbound I-25 off-ramp to Spruce Mountain Road closed from 8 p.m. Saturday, Oct. 17, to 8 a.m. Sunday, Oct. 18. Ramp detour in place at the Upper Lake Gulch Road interchange. 
    I-25 Douglas County Detour 3
  • Southbound I-25 closed from 8 p.m. Friday, Oct. 23, to 8 a.m. on Saturday, Oct. 24. Ramp detour in place at the Spruce Mountain Road flyover.
    I-25 Douglas County Detour 4

Project Information

Travelers are urged to “know before you go.” Gather information about weather forecasts and anticipated travel impacts and current road conditions prior to hitting the road. CDOT resources include:

About the Project

CDOT is improving 18 miles of I-25 between Monument and Castle Rock by widening the highway from two to three lanes in each direction. The new lane will operate as an Express Lane, allowing motorists the choice of taking the Express Lane for a faster, more reliable travel time in exchange for a toll. Express Lanes will be free to vehicles with three or more people and motorcycles. All travelers will have the choice of taking the general-purpose lanes for free.

The project also includes shoulder widening, rebuilding bridges, new wildlife crossings, resurfacing with new pavement and modernizing technology. Project completion is scheduled for 2022.

Remember: Slow for the Cone Zone

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

  • Do not speed in work zones. Obey the posted speed limits.
  • Stay Alert! Expect the unexpected.
  • Watch for workers. Drive with caution.
  • Anticipate lane shifts and merge when directed to do so
  • Expect delays, especially during peak travel times.
  • Allow ample space between you and the car in front of you.
  • Avoid using mobile devices such as phones while driving in work zones.
  • Turn on headlights so that workers and other drivers can see you.
  • Be especially alert at night while driving in work zones.
  • Be patient!