CO 7 Cherryvale Road to 28th Street Resurfacing
Travel Alert
CO 7 and 48th Street intersection closure begins Friday, Sept. 12, 2025 through Monday, Sept. 15, 2025.
- Long delays anticipated, an alternate route is highly advised. Refer to the Traffic Impacts section for details.
About the Project
The Colorado Department of Transportation and contractor Asphalt Specialties Co. began a construction project on Colorado Highway 7 (Arapahoe Avenue) between 28th Street and extending east to Cherryvale Road in Boulder.
Work on this project is scheduled for completion in late December 2025.
The existing asphalt will be milled and overlaid with new asphalt. Milling removes the worn-out surface layer, and the fresh asphalt overlay restores the road's smoothness and improves safety. While work is in progress, erosion control measures will be in place to prevent sediment runoff and protect water resources during construction.
Work also includes ADA upgrades that include curb ramp installations. These curb ramps are a small but important part of making sidewalks, street crossings and other pedestrian routes accessible to everyone.
Additionally, the City of Boulder will coordinate with CDOT to launch the East Arapahoe Bus and Turn Lanes Signing & Striping Project, which will convert underutilized right-through lanes into shared curbside lanes for buses and right-turning vehicles only, and provide improved trip reliability for the existing bus service routes. This joint effort will help reduce costs, shorten construction timelines and lessen disruptions for the community.
This combined project between the City of Boulder and CDOT will provide improved ADA and safer connections to the corridor and bus service, as well as necessary safety and riding surface improvements for all modes utilizing the corridor. Partnering on these projects reduces the overall construction duration and impact on users in the corridor.
Work this Week & Lane Closures for CO 7 Cherryvale Road to 28th Street
Project Facts
- Construction Cost: $5 Million
- Contractor: Asphalt Specialties Co.
- Timeline: April 2025 to December 2025
- Location: CO 7 (Arapahoe Avenue) between Cherryvale Road and 28th Street
- Nearest Town/City: Boulder
- Mile Point(s): MP 52.3 to MP 55.5
- County: Boulder
Project Benefits
- Milling removes the worn-out surface layer, and the fresh asphalt overlay restores the road's smoothness and improves safety
- Erosion control measures will prevent sediment runoff and protect water resources during construction
- ADA curb ramps are a small but an important part of making sidewalks, street crossings and other pedestrian routes accessible to everyone
- Business Access and Transit (BAT) lanes improve traffic flow and reduce travel time for buses and vehicles, while still allowing motorists to reach local businesses
Work Schedule
- Monday through Friday, from 9 a.m. to 4 p.m.
- The work schedule is weather-dependent and subject to change
Traffic Impacts
South Intersection Closure at CO 7 and 48th Street
The south intersection will be closed at Colorado Highway 7 and 48th Street from 5 p.m. Friday, Sept. 12, 2025, through 5 a.m. Monday, Sept. 15, 2025, for milling and paving work. Access to South 48th Street will be closed, with a detour provided to maintain access. This configuration will remain in place for the duration of the weekend.
Crews are currently performing reclamation work, removing the existing asphalt and reconditioning the base materials to create a stronger foundation. This will be followed by a new asphalt overlay to improve smoothness and safety for drivers. The work is part of an ongoing project to improve roadway conditions and extend pavement life. Please plan ahead and use caution when traveling near the work zone.
- Access to South 48th Street will be closed
- Detour from CO 7: Travel south on Eisenhower Drive to connect with 48th Street
- Detour from 48th Street: Travel east on Eisenhower Drive to connect with CO 7
- Sidewalks and bus stops will be closed on the eastbound side of the roadway
- Detour signs will be posted for pedestrians
- Motorists should follow posted detour signs
- Business access will remain open
- The speed limit will be reduced to 35 MPH throughout the work zone
- Please be aware of construction vehicles entering and exiting the work area
CO 7 and 48th Street intersection closure
A one-lane traffic pattern in each direction on westbound CO 7 between Commerce Street and Foothills Parkway continues to allow crews to safely complete work on the eastbound lanes. This traffic configuration will be in place through Sept. 15, weather permitting. Access to local businesses will remain open throughout construction, and pedestrians are advised to follow posted detour routes for safe navigation around the work zone.
- Westbound CO 7 between Commerce Street and Foothills Parkway will be reduced to one lane in each direction
- Sidewalks and bus stops will be closed on the eastbound side of the roadway
- Detour signs will be posted for pedestrians
- Major delays are expected
- An alternate route is highly advised
- Business access will remain open
- The speed limit will be reduced to 35 MPH throughout the work zone
- Please be aware of construction vehicles entering and exiting the work area
- Refer to COtrip.org for real-time travel conditions and road closures
