Colorado to Expand Northbound I-25 Lanes Near Berthoud

The state transportation department prepares to shift traffic into new lanes on Interstate 25 by early 2027.

Updated on Oct. 20, 2026 in Construction

Colorado to Expand Northbound I-25 Lanes Near Berthoud

Live Poll

Does ongoing highway construction make your daily commute better or worse?

The Colorado Department of Transportation will soon open expanded northbound lanes on Interstate 25 between Mead and Berthoud. This project aims to alleviate congestion for commuters traveling between Northern Colorado and the Denver metro area.

Why it matters

Expanding these lanes and adding express shoulders is intended to improve long-term traffic flow on a critical corridor. The ongoing work serves to better connect the growing Northern Colorado region with the Denver metro hub.

The construction project includes the addition of expanded shoulders and express lanes across the project zone. Speed enforcement cameras will remain active in the area until all final project work is completed.

The players

Colorado Department of Transportation

This state agency manages the planning, construction, and maintenance of Colorado's highway and bridge infrastructure.

The details

Crews are painting new lane striping this week to facilitate a major traffic shift between the north and south sides of the highway. This movement is necessary to create the required workspace to finalize the roadway expansion.

Crews are beginning to paint new lane striping this week.
Northbound traffic is expected to shift onto new lanes in December or January.

Market Landscape

This project aligns with statewide efforts to modernize aging highway infrastructure to accommodate rapid population growth. It positions regional transit networks to handle increased load capacity compared to existing corridor constraints.

Commuters should anticipate continued active construction zones and reduced speeds through the Mead and Berthoud corridor. Speed enforcement cameras remain in place to manage traffic safety until the full project reaches completion.

The takeaway

Drivers should prepare for shifting traffic patterns as construction continues through the winter months. Maintaining consistent speeds is necessary to avoid penalties from active enforcement cameras in the work zone.