CO 7 Cherryvale Road to 28th Street Resurfacing

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

• Milling and paving work is scheduled Monday through Friday, from 7 a.m., and may last until midnight if necessary
• Milling and paving operations anticipated through late October
• The work schedule is weather-dependent and subject to change

Traffic Impacts

• Milling and Paving Operations on CO 7 (Arapahoe Avenue) between 28th Street and Foothills Parkway
  • Operations begin in the right lane at the southeast corner of 28th Street, moving eastbound toward Foothills Parkway before transitioning to the westbound right lane back toward 28th Street
  • Once the right lanes are milled, paved and striped, crews will move to work in the center lanes, then finish in the left lanes
  • After work is completed between 28th Street and Foothills Parkway, construction will shift to the east side of Foothills Parkway to Cherryvale Road.
• Eastbound and westbound double-lane closures, but not at the same time
• Significant delays are expected and alternate routes are strongly encouraged
• Motorists should follow posted detour signs
• Business access will remain open
• Flaggers will be in place at the entrance and exit points along Arapahoe Avenue
  • Traffic may be held up to 20 minutes at these locations until the paving equipment passes
• 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
• For current road conditions, visit COtrip.org