News

Expect Closures Overnight Nov. 28 & 29 on I-25 Near Monument Hill

Nov. 26, 2018 -


MONUMENT—From 9 p.m. to 5 a.m. overnight both Wednesday, Nov. 28 and Thursday, Nov. 28, crews will close a section of I-25 near Monument Hill as they repair pavement and stripe.

This is preparatory work for construction on the seven-mile-long southern portion of the 18-mile I-25 South Gap project, between Greenland Road and Monument. Prior to this, the most active construction has been along the northern five miles of the project, between Plum Creek Parkway and Sky View Lane (Tomah Road).

Travel Impacts

  • From 9 p.m. Wednesday, Nov. 28 through 5 a.m. Thursday, Nov. 29, crews will close southbound I-25 between Monument Hill and Colorado Highway 105.
  • From 9 p.m. Thursday, Nov. 29 through 5 a.m. Friday, Nov. 30, the southbound I-25 section will be open and crews will close the same section on the northbound I-25 side. All construction schedules are weather dependent.
  • Detour Route
    • Traffic will funnel into one lane around the closures and detour through the weigh stations on I-25, a half mile north of CO 105. Please watch for crews and follow posted speed limits.
  • Additional Lane Closure Information
    • From 8 p.m. to 5 a.m. throughout construction, travelers can expect I-25 lane and ramp closures.
    • Two lanes of traffic will remain open during the day in both directions on I-25. Watch for trucks entering and exiting the median and obey the reduced speed limit, which is 65 mph in the I-25 construction zone and 40 mph on the frontage roads.

Project Info

CDOT is improving 18 miles of I-25 from south of Castle Rock to Monument by widening the road 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 and more reliable travel time in exchange for a toll, or driving the general-purpose lanes for free. Carpools with three or more people will be able to ride the Express Lane for free.

Other improvements include widening the shoulders, rebuilding bridges, building new wildlife crossings, resurfacing with new pavement and modernizing technology.

The cost of the project is $350 million. Substantial completion of the project is expected late 2021, with Express Lanes opening in 2022.

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