Every year, construction and maintenance crews repair sidewalks, restore pavement and refresh pavement markings on roads across Douglas County. And here’s where the projects will be in Highlands Ranch.
Starting in June from 7 a.m. to 7 p.m. Monday through Friday, improvements will be made to East Dutch Creek Street, East Millistone Street, East Millistone Place and South Millistone Court.
There will also be two resurfacing projects – one on Cresthill Lane between Highlands Ranch Parkway and Gleneagles Village Parkway, and the other on Venneford Ranch between University Boulevard and Colorado Boulevard.
According to the county website, each street will be completed in phases throughout the summer. The first phase includes sidewalk repairs and curb ramp upgrades. These typically take between two-to-four weeks per neighborhood to be completed. However, work on a single block is about three-to-four days.
The second phase, which is expected to take about two-to-four hours per block, involves removing some of the top layer of asphalt. The final phase will place a new overlay, and is expected to take about four-to-eight hours per block to complete.
The county also plans on mailing information to residents and leaving door hangers before the work begins.
A new interactive roadway project map
In addition to neighborhood repairs, there are other spring and summer roadway projects taking place, which is why Douglas County has launched a new interactive map.
The map aims to help residents identify potential impacts to their commutes and help keep work zones safe.
According to the National Work Zone Safety Information Clearinghouse, at a national level, there were more than 800 fatal crashes in work zones in 2022, which is the latest data available. The data estimates that there were 10 work zone fatalities in Colorado in 2022.
The Colorado Department of Transportation states that there were 23 crashes, resulting in 31 fatalities in Colorado in 2024, which was an increase from 16 fatalities in 2023.
To help prevent these crashes and fatalities, Douglas County’s new map indicates current county projects with an orange circle and current special events – such as the Highlands Ranch Mother’s Day 5K – with a blue circle.
Upcoming county projects and special events are represented by squares in the coordinating orange and blue colors.
By clicking on the circle or square, there is a description of the project, where it is taking place, when it is expected to be complete, who the company working on the project is and contact information for the special event program managers.
The interactive map can be found at tinyurl.com/Dougco-construction-map.
Highlands Ranch projects include include:
Douglas County’s U.S. 85 Widening from Highlands Ranch Parkway to C-470
Currently underway, the project is widening the highway from four to six lanes. The project also includes reconstructing a portion of South Santa Fe Drive from Highlands Ranch Parkway, extending north of the C-470 interchange to Dad Clark Gulch.
The project is anticipated to be complete by the end of this year.
Douglas County’s Kendrick Castillo Way/Plum Valley Lane project
Crews have begun to install a new traffic signal at the intersection of Kendrick Castillo Way and Plum Valley Lane. Throughout the project, traffic will be reduced to one lane in both north and southbound directions of Kendrick Castillo Way, according to the county website.
The anticipated end date for the project is mid-to-late August.
Douglas County’s C-470 Trail and University Boulevard pedestrian grade separation
Douglas County embarked on this project earlier this year after partnering with CDOT on a Safer Main Street Initiative.
The project involves constructing a grade separation for bicyclists and pedestrians using the C-470 Trail to cross over University Boulevard, instead of having bicyclists and pedestrians cross over eight lanes of traffic. This project also aims to improve traffic operations.
The project is expected to be complete by the end of the year.
Douglas County’s 2025 sidewalk repair
There will be concrete repair and adjacent landscaping restoration along the South Quebec Street median.
This work is expected to be finished by the end of May.
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