Drivers on Interstate 25 between Monument and Castle Rock will notice more construction this month as I-25 South Gap crews begin working in the median to build wider shoulders and the new express …
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Drivers on Interstate 25 between Monument and Castle Rock will notice more construction this month as I-25 South Gap crews begin working in the median to build wider shoulders and the new express lanes.
This week, crews will prepare to remove asphalt inside the median near Castle Rock, between Plum Creek Parkway and Sky View Lane (Tomah Road). By next week, crews will mobilize heavy equipment, and trucks will enter and exit the median frequently.
Work in the median will not require lane closures. However, drivers should continue to expect intermittent overnight lane closures on I-25 from 8:30 p.m. to 5 a.m. Sundays through Thursdays.
In addition, work along the east and west frontage roads will continue with daytime and overnight closures throughout the 18-mile corridor for drainage work and fiber optic installation. Daytime lane closures are planned between 9 a.m. and 4 p.m. Mondays through Fridays and overnight work is planned between 8:30 p.m. to 5 a.m. Sundays through Thursdays. Flaggers will maintain home and business access.
Work along the 18-mile corridor has been under way since the August 2018 groundbreaking, but the most active construction is just south of Castle Rock between Plum Creek Parkway and Sky View Lane. The new express lanes and wider shoulders will be built in the median along that five-mile stretch.
About the I-25 South Gap project
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 paying a toll to use the lane 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 the express lanes opening in 2022.
To stay up-to-date on the project, go to i25gap.codot.gov, call the construction hotline at 720-745-5434, or get email updates via email@example.com. Get text alerts by texting I25GAP to 21000, or check Facebook (ColoradoDOT) or Twitter (@coloradodot) for updates.
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